A case study is eight parts, and two of them decide whether it is read
The format below is the one buyers expect: client, situation, constraint, what you did, what changed, a quote, what you would do differently, and who it is for. The constraint and the line about what you would change are the two almost every company leaves out, and they are the only evidence in the document that it is an account of real work.
Below: the eight parts, the questions to ask in the interview, what to do when you have no numbers, how to publish it without naming the client, a template you can copy, and twenty more answers in one line each. Then the generator, which lays it out in your own colours and fonts and will not invent a figure to fill a page.
73%
of decision-makers trust thought leadership over marketing materials
Edelman-LinkedIn, 2024
~2%
of LinkedIn users publish weekly, so your buyer reads far more than they post
Derived from LinkedIn, 2019
3x
more engagements for the most consistent posters
Buffer, 2025
Your buyer reads far more than they publish, and what they trust is an account of work rather than a claim about it.
What is a case study, and what goes in one?
A case study is a written account of one finished project: who it was for, what was wrong, what made it hard, what you did and what changed. The conventional format is eight parts, and the two that carry it are the constraint you worked under and one honest line about what you would do differently. Both cost nothing and both are usually missing.
- Parts
- Eight
- Length
- One page, or six to ten
- Written by
- Whoever ran the work
- Written when
- The week the job ends
What does an AI case study generator do, and what can it not do?
It takes the facts you supply and lays the eight parts out as a finished document in your own colours and fonts, ready to publish or attach. What it cannot do is the interview: the material comes from twenty minutes with whoever ran the work. Blendin's will not invent a statistic, a quote or an outcome, so an absent number is written around rather than filled in.
- It makes
- The document
- You supply
- Every fact
- Invented figures
- None, ever
- Output
- PDF, or a LinkedIn document
The one you keep meaning to write
Tell Blendin what happened on a job you have already finished and get it back as a document in your firm's own colours, type and logo, ready to publish or to download and send.
Free for 14 days on the full Starter plan, card required, no charge today, then $59 a month, cancel anytime.
Eight parts, and the two nobody writes are the two that make it readable
The order is a convention rather than a rule, and it is the order a reader expects, which is worth more than originality on a document whose whole job is to be believed.
What goes in each of the eight
01Who it was, in one line
Named if you have permission, described precisely if you do not. A B2B distributor with 40 staff and two depots carries the credibility without the permission problem, and it is what most companies can publish this week rather than next quarter.
02The situation, and what it was costing
Not the problem in the abstract. The specific thing that was going wrong and what it meant: the overtime, the failed audit, the customer who left, the week nobody could ship. A reader recognises themselves in a cost, not in a category.
03The constraint
The part that makes it a story rather than a brochure. No downtime, a fixed deadline, a regulator, a budget already spent, an incumbent still on site. Almost every case study omits this, and it is the section that makes the outcome mean something.
04What you did, in the order you did it
Three or four steps, in plain language, with the decision points visible. This is where a technically literate reader decides whether you actually know the work, so do not smooth it into a process diagram.
05What changed
The number if you have one, and the honest qualitative answer if you do not. A case study with two real numbers is stronger than one with six plausible ones, and a case study with none is still worth publishing if what changed is clear.
06A quote in their words
One or two sentences, as they said them, attributed to a role at minimum. An invented quote is the fastest way to lose a reader who knows the client, and it is not worth the risk on a document whose whole function is credibility.
07What you would do differently
One line. It is the section that separates a case study somebody reads from one they skim, because it is the only proof in the document that the account is not a sales sheet with a client name on it.
08Who this is for, and the next step
One sentence naming the kind of company this applies to, and one instruction. Without it the reader agrees with you and does nothing.
The two parts everybody leaves out
The constraint
What made the job hard. No downtime available, a fixed handover date, a regulator, a budget already spent, an incumbent still on site, a building nobody could close. Without it the outcome has nothing to be measured against, and the piece reads as a brochure with a client name on it. With it, a reader who has faced the same constraint stops skimming.
What you would do differently
One line, and it is the most counter-intuitive instruction on this page. It is the only proof in the document that the account is not a sales sheet, and an experienced buyer reads its absence the same way they read a proposal with no exclusions. It costs you nothing that the reader had not already assumed.
What to write when you have no numbers
This is the reason most case studies never get written, and the fix is not to find a number. It is to stop treating the number as the point. A case study with two honest figures is stronger than one with six plausible ones, and one with none is still worth publishing.
Say what changed, in the smallest true unit
Not a percentage. The shift that happened: a second depot came online without extra headcount, the audit passed first time, the night crew stopped calling the owner at eleven. Specific beats measured when measured is not available.
Use the client's own sentence
One line of what they said, quoted exactly, does more for credibility than any figure you could have estimated. It is also the only part of the document a competitor cannot copy.
Name the constraint instead
A job done under a fixed deadline, with no downtime, or while an incumbent was still on site is impressive without a metric, because the reader knows what those cost.
Do not estimate, and do not round up from nothing
An unsourced percentage is the fastest way to lose a technical reader, and it is the one thing in this document that can actually be checked. If you would not defend the number in a meeting, it does not go on the page.
Publishing it without naming the client
The permission round is what keeps most case studies in a drafts folder for a quarter, and in a lot of cases it is avoidable. A description carries almost all of the credibility: a B2B distributor with 40 staff and two depots, a county school district, a regional clinic group. The reader is checking whether you have done work like theirs, and a description answers that.
Two things to get right. Describe them precisely enough to be recognisable as a TYPE and not as a company, which usually means sector, size and shape and never the one unusual detail that identifies them. And say in the document that they asked not to be named, which reads as discretion rather than as evasion and stops a reader wondering what you are hiding.
Check the contract before you assume either way. Most master service agreements restrict naming a client in marketing and almost none restrict describing the work, which is the asymmetry this whole approach runs on.
The eight questions that produce the whole document
This is the twenty minutes that fills the room. Ask whoever ran the work, not whoever sold it, and write the answers down as they say them rather than tidying as you go.
A case study cannot be generated out of an empty room.
| Ask this | What it produces |
|---|---|
| 01What was going on before you called us? | Opens the situation section in their words rather than yours, and the phrasing they use is usually better than anything you would write. |
| 02What was that actually costing you? | Turns a category into a cost. Overtime, a lost account, a failed inspection, a week of nobody shipping. |
| 03What made it hard to fix? | This is the constraint, and it is the single question most likely to produce the sentence the whole piece hangs on. |
| 04What had you already tried? | Names the alternative the reader is currently considering, without you having to name a competitor. |
| 05What surprised you about how it went? | Produces the detail that makes the account read as real, and it is where the usable quote almost always comes from. |
| 06What can you measure now that you could not before? | Asks for a number without asking them to invent one. If the answer is nothing, you have a qualitative case study and that is fine. |
| 07Who else in your business noticed? | Finds the second beneficiary, which is often the person who signs the renewal. |
| 08What would you tell somebody weighing this up? | This is the quote. Ask it last, write it down exactly, and read it back to confirm you have it right. |
Record it, and do not tidy as you go
The phrasing somebody uses about their own problem is almost always better than the phrasing you would write for them, and it is the part that makes the finished piece sound like an account rather than like marketing. Write the answers down as they come, including the half-sentences. You can cut later; you cannot recover a sentence you smoothed out in the room.
It starts as a twenty minute conversation
Every real case study begins the same way: asking whoever actually did the work what was hard, what changed, and what they would tell someone in their position. The eight questions above are what turns that conversation into a document with content in it.
Which format, and why it is not one choice
The content above does not change with the format. What changes is the length and where it is read, so the same interview and the same eight parts should produce more than one artifact. Write it once, publish it in the shapes your buyer actually encounters.
The one page PDF
For attaching to a proposal and handing over in a meeting. Situation, constraint, what you did, what changed, quote. This is the format that gets used most and written least.
The document post
The same content as a multi page PDF published into the LinkedIn feed, where it is swiped rather than downloaded. It reaches people who were never going to open an attachment.
The web page
Longer, with the detail a technical buyer wants and the search terms a stranger types. This is the version that still brings you work two years later.
The short video
Two minutes of the client saying it themselves, which no written version can match. It is also the one that needs their time rather than yours, so ask on the day the work went well.
The loop that makes the next proposal shorter
The proposal you already wrote contains most of the case study: the situation is section one, the constraint is buried in the timeline, and what you did is the scope. Write it up the week the job ends, then attach it to the next proposal as the proof section.
The template, in plain text
Headings and field labels, nothing else, so it will not fight whatever you write in. Take it and never come back if that is all you needed.
CASE STUDY [Headline: the change, not the client name] THE CLIENT [Named with permission, or described precisely: sector, size, shape] THE SITUATION [What was going wrong, and what it was costing. Be specific.] THE CONSTRAINT [No downtime / fixed deadline / regulator / budget spent / incumbent on site] WHAT WE DID 1. [Step, with the decision you made] 2. [Step] 3. [Step] WHAT CHANGED [The number if you have one. The honest qualitative answer if you do not.] IN THEIR WORDS "[One or two sentences, as they said them.]" [Name or role, company] WHAT WE WOULD DO DIFFERENTLY [One line. Do not skip this one.] WHO THIS IS FOR [The kind of company this applies to, and one next step]
How to write one, in order
- 1
Pick the job, not the client
Choose the project that most resembles the work you want more of, rather than the biggest logo you have ever touched. A small job for the kind of buyer you are chasing outsells a large one in a field you are leaving.
- 2
Interview whoever ran it, for twenty minutes
Eight questions, in the order on this page, recorded or typed as you go. The delivery lead remembers the constraint; the person who sold it remembers the pitch, which is not the same thing and is less useful here.
- 3
Write the constraint before you write the outcome
Name what made the job hard: the deadline, the downtime you could not take, the regulator, the incumbent still on site. Without it the outcome has nothing to be measured against and the piece reads as a brochure.
- 4
Put in the numbers you have and none that you do not
Take figures from something you can point at: an invoice, a ticket count, a report, a measurement the client made. If there is nothing, say what changed in plain language and publish it anyway.
- 5
Ask for the quote on the day it went well
One question, their answer written down exactly, read back to confirm. Then lay it out in your own colours and type and publish it as a document, a page and a one page PDF from the same material.
Twenty case study questions, answered in one line
Each row is a separate question, with its own link. If one of them is the reason you are here, take the answer and go.
| The question | The short answer |
|---|---|
| What is a case study? | A written account of one piece of work you have finished: who it was for, what was wrong, what you did and what changed.In B2B services it is the proof section of your next proposal, which is why it pays for itself twice. |
| What is the standard case study format? | Client, situation, constraint, what you did, what changed, a quote, what you would do differently, and who it is for.Eight parts. The constraint and the what we would do differently line are the two almost everybody drops. |
| How long should a case study be? | One page as a PDF, six to ten pages as a LinkedIn document, 800 to 1,200 words as a web page.If it needs twelve pages it is usually two case studies wearing one headline. |
| How many case studies do I need? | Three, one per kind of buyer you sell to, before volume is worth chasing.A fourth in the same category adds less than a first in a category you have none for. |
| Can I write a case study without the client's permission? | Yes, if you do not name or identify them. Describe them by sector, size and shape instead.Check your contract first: some MSAs restrict naming, almost none restrict describing. |
| What if I have no numbers? | Publish it anyway and say what changed in plain language. Never estimate a figure to fill the gap.Two honest numbers beat six plausible ones, and none beats one you cannot source. |
| What is the difference between a case study and a testimonial? | A testimonial is what the client says about you. A case study is what happened, with the testimonial inside it.A testimonial with no situation around it is unfalsifiable, which is why readers skim them. |
| What is the difference between a case study and a white paper? | A case study is one project and is specific. A white paper argues a general position and cites several.The case study is far cheaper to write because you already lived it. |
| Is a case study the same as a success story? | Same document, softer name. Success story usually signals a shorter, more quotable version with less method in it.Pick one word and use it consistently across your own site. |
| Who should write the case study? | Whoever ran the work, from an interview, not the person who sold it.The delivery lead remembers the constraint, and the constraint is the part that makes it readable. |
| When should I write it? | The week the job ends, while the constraint is fresh and the client is still pleased.It is also the only week they will give you a quote in one email rather than three. |
| How do I ask a client for a quote? | Ask one question, write down the answer, and read it back. Never send a draft quote for approval.A quote you wrote for them to approve reads like marketing, because it is. |
| Where should a case study be published? | Your own site for search, a LinkedIn document post for the feed, and a one page PDF for proposals.Same eight parts, three artifacts, one interview. |
| What is a case study one pager? | The single page version: situation, constraint, what you did, what changed, quote. It is the one that gets attached to proposals.It is the format most often used and least often written, because it looks too small to be worth the effort. |
| Does a case study need images? | It needs one real one: the site, the product, the team, the before and after. Stock photography subtracts.A document post with no image at all still works if the typography is yours. |
| What is a case study generator? | A tool that takes the facts you supply and lays the eight parts out as a finished document.What it cannot do is the interview, which is where the actual content comes from. |
| Will an AI case study generator invent the numbers? | Blendin's will not. The writing engine carries a hard fabrication ban on numbers, quotes, people and events.If you supply no figure it writes around the absence rather than filling it in. |
| Can I turn a case study into a LinkedIn post? | Yes, and the document post is the native shape: a multi page PDF swiped in the feed rather than downloaded.LinkedIn calls the format Documents and Presentations, and Blendin publishes to it directly. |
| How much does a case study cost to write? | An hour of interview and an hour of writing, or a page of your monthly allowance inside Blendin.It is not sold separately here and there is no extra purchase for it. |
| What makes a B2B case study credible? | A named constraint, a checkable outcome, a quote in the client's own voice, and one honest line about what you would change.Three of those four cost nothing and are the three most often missing. |
What the generator does
You paste your website address. Blendin reads the real colours, fonts and logo off your own pages and builds a brand from them, then lays the eight parts out as a multi page PDF you can download and attach, or publish straight into the LinkedIn feed as a native document post that is swiped rather than opened. It writes in the way your own site already writes, then rewrites until the AI tells are gone, and a human approves every piece before it goes anywhere.
What you get back
- A document laid out in your own colours, fonts and logo, read off your own website rather than picked from a theme.
- The caption to go with it, written for the network it is going to, and a first comment if you want one.
- An editor where you move text, shapes, arrows, images and your logo by hand, free on every plan, plus Tweaks if you want to paint a region and describe a change.
- The same brand on everything else you publish, so a buyer checking you out sees one company rather than three.
What it will not do
The fabrication ban matters more here than anywhere else on this site, because a case study is the one document a reader can check with a phone call.
- It will not invent a statistic, a quote, a client name or an outcome. If you supply no number, the piece is written around the absence.
- It will not do the interview. The material comes from a conversation with whoever ran the work, and that is the hour that actually costs you something.
- It will not get the client to approve being named. That is a conversation, and the anonymous version is usually the one that ships.
- It is not a case study management system. It makes the document; where you file it is your business.
- It will not write a case study about work you have not done yet.
How it is charged, plainly: a document is not sold separately and there is no extra purchase for it. It draws on the same monthly allowance as everything else you make, counted by the pages it generates, on plans at 59, 139 and 249 dollars a month. Publishing goes to LinkedIn, both personal profiles and Company Pages, on Blendin's own app approved for the LinkedIn Community Management API.
Questions
What is the standard case study format?
Eight parts: who the client was, the situation and what it was costing, the constraint you worked under, what you did in the order you did it, what changed, a quote in their words, one line on what you would do differently, and who it is for with a next step. The constraint and the what we would do differently line are the two most often missing and the two that make it readable, because they are the only evidence in the document that it is an account of real work rather than a sales sheet with a client name on it.
What does the generator actually produce?
A LinkedIn document post: a multi page PDF that renders as a swipeable card stack in the feed, laid out in your own colours and fonts, plus the caption to go with it. You can publish it from Blendin or download the pack and send it to whoever publishes. The same material also gives you a one page PDF to attach to a proposal.
Will it invent the numbers?
No, and this is the part that matters most for a case study. The writing engine has a hard fabrication ban: no invented statistics, no invented quotes, no invented people or events. If you do not give it a number it will write around the absence rather than fill it in. A case study with a plausible fake percentage in it is worse than no case study, because it is the one document a reader can check with a phone call.
What do I need to have ready?
Less than you think, and all of it real: who the client was or how you can describe them without naming them, what the problem was, what made it hard, what you did, and any outcome you can actually stand behind. A sentence of a real quote beats a paragraph of an invented one. Twenty minutes with whoever ran the work produces all of it.
Can I publish a case study without naming the client?
Yes, and it is usually the version that actually gets published. A B2B distributor with 40 staff and two depots carries the credibility without the permission round that keeps most case studies in a drafts folder for a quarter. Describe them precisely enough to be recognisable as a type and not as a company, and say in the document that they asked not to be named, which reads as discretion rather than as evasion.
What if I have no numbers for the case study?
Publish it anyway and say what changed in plain language. An account of a real project with two honest numbers beats one with six plausible ones, and one with none is still worth reading if the situation, the constraint and what you did are specific. What is never worth publishing is a percentage nobody can source, which is why Blendin will not write you one.
How many pages should it be?
Usually between six and ten as a LinkedIn document. A document post is read with a thumb on a phone, and a case study that needs twelve pages is generally two case studies. As a PDF attached to a proposal, one page: situation, constraint, what you did, what changed, quote.
Is a document different from a carousel?
Technically they are the same upload: LinkedIn calls the format Documents and Presentations, and both are PDFs. The difference is shape and intent. A carousel is punchy and portrait; a document is longer, and Blendin also offers a 16:9 landscape presentation layout for when it is closer to a deck than a post.
What is the difference between a case study and a testimonial?
A testimonial is what a client says about you, usually two sentences with no situation around it, which is why readers skim them. A case study is an account of what happened, with the testimonial quoted inside it as one of eight parts. The testimonial is the easiest to collect and the least persuasive on its own; the case study is what makes it believable.
Who should write it, and when?
Whoever ran the work, interviewed rather than asked to write, in the week the job ends. The delivery lead remembers the constraint and the person who sold it remembers the pitch, and the constraint is the part that makes the piece readable. That week is also the only one in which a client will give you a quote in a single email.
How do I ask a client for the quote?
Ask one question, write down their answer exactly, and read it back to confirm you have it right. Do not send them a quote you wrote for them to approve: it reads like marketing because it is, and the approval round costs you more time than the question would have. The best question to end an interview on is what would you tell somebody weighing this up.
How does this relate to the proposal I send?
The proposal you already wrote contains most of the case study. The situation is section one, the constraint is buried in the timeline, and what you did is the scope. Write the case study from the proposal the week the job ends, then attach it to the next proposal as the proof section. Each document makes the next one shorter, which is the only version of this that survives a busy quarter.
How is it charged?
A document is not sold separately and there is no extra purchase for it. It draws on the same monthly allowance as everything else you make, counted by the pages it generates, on plans at 59, 139 and 249 dollars a month. The first one you make can be the case study: a new account gets one free generation of anything the paid plan can make.
Paste the company URL and the brand comes back
Blendin reads the real colours, fonts, logo and tone off your own site and builds a brand kit from them. It never invents a brand colour that is not there, which is the same rule this whole page runs on: real signal or nothing.
The rest of the documents a services company owes itself
Winning the work in the first place
The proposal, the job bid and the rate sheet, on the service proposal template.
Selling to government or enterprise
The one page they ask for before a proposal exists, and the company profile behind it. Capability statement.
Every template on one page
The templates hub, the spec sheet and sell sheet, and the plans.
Start with the one you keep meaning to write
The first thing you make can be the case study: a new account gets one free generation of anything the paid plan can make. Publish it, or download it and send it on. Free for 14 days on the full Starter plan, card required, no charge today, then 59 dollars a month, cancel anytime.
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