ChatGPT file upload guides

102 guides on getting documents into ChatGPT, what it will and will not accept, and what to do when it refuses.

Getting past the limits

Practical fixes for files ChatGPT refuses to take.

What ChatGPT accepts

Straight answers on which formats work, which do not, and what to do instead.

Error messages explained

The exact message you hit, what causes it, and how to get past it.

Limits by plan

What Free, Plus, Pro and Team actually allow.

Working with documents

Getting better results once the file is in.

Comparisons

How ChatGPT stacks up against the alternatives for document work.

Getting past the limits

Practical fixes for files ChatGPT refuses to take.

How to bypass the ChatGPT file upload limit in 2026: 5 fixes

The limit cannot be raised, so all 5 fixes send less at a time. Paste in parts under 10,000 characters, plus the 4 tricks that only look like they work.

Getting an email thread into ChatGPT without the noise

Copy the text, do not upload the .eml or .msg. Paste over 10,000 characters and ChatGPT makes it an attachment anyway. What to strip out of the thread first.

5 free ways to get more file uploads out of ChatGPT

Free gives 3 uploads a day and the cap cannot be raised. 5 ways to spend fewer of them, including the one route that does not count as an upload.

How to shrink a file so ChatGPT will accept it

Export to plain text first: a 40 MB Word file of screenshots lands in tens of KB. Then compression, image stripping, CSV, and the case where none of it helps.

How to send a PDF to ChatGPT

Paperclip on desktop, plus button on mobile, question in the same message. Then the one check that tells you whether ChatGPT read the whole PDF or just page 1.

How to split a long document for ChatGPT

Keep each part under 10,000 characters, cut at section boundaries, and send the wait-for-all-parts instruction first. Past 10,000 a paste becomes an upload.

How to upload a large Excel file to ChatGPT

Excel is capped at about 50MB but exempt from the 2 million token cap. Export to CSV, cut the columns you do not need, and send a sample if it is too big.

How to upload a large PDF to ChatGPT: 4 ways that work

512 MB is the ceiling, but a 3 MB PDF can still be too long: text caps at 2 million tokens. How to tell truncation from rejection, and the 4 fixes.

How to upload a large PowerPoint to ChatGPT

The cap is 512 MB per file, and a heavy deck is heavy because of images ChatGPT discards anyway. Export the slide text and speaker notes, and see what goes.

How to upload a large ZIP file to ChatGPT past the 512 MB cap

ChatGPT caps any single file at 512 MB, and a 700 MB archive is never 700 MB of text. See what is inside, pick the few files that matter, send them as one.

How to upload large code files to ChatGPT

Concatenate the 3 to 6 files that matter into 1 text file with path headers. ChatGPT never unpacks a zip. The one line command, and what to strip out first.

How to upload large files to ChatGPT: 4 limits, 4 fixes

512 MB per file, 2M tokens per document, 3 a day on Free. Four separate limits stop a big file, and the one that stops most people shows no error.

How to get more than 10 files into ChatGPT, now that a message takes 20

20 files per message on web since February 2026, not 10. Projects cap at 25 on Plus and a custom GPT at 10, plus the trick that sends 12 files as one.

How to upload a scanned document to ChatGPT

ChatGPT extracts no text from a scan, so run OCR first: Preview on a Mac, PowerToys on Windows, OCRmyPDF for anything long. The 2 checks that catch bad OCR.

Paste the text or upload the file?

Pasting is a message, not an upload, so no daily, rolling or storage cap touches it. But paste over 10,000 characters and ChatGPT converts it to a file anyway.

What ChatGPT accepts

Straight answers on which formats work, which do not, and what to do instead.

Which file format does ChatGPT handle best?

Plain text wins, because there is no parsing step to go wrong. All 9 common formats ranked, plus the 2 second test that spots a PDF ChatGPT cannot read.

Can ChatGPT open a ZIP archive?

No. ChatGPT never unpacks archives, so a ZIP costs 1 upload slot and returns nothing readable. Extract it, then bundle the files into 1 text file instead.

Can ChatGPT read .eml and .msg email files?

EML reads fine, MSG does not: it is Outlook binary with no text layer. Save it as Text Only from Outlook, and why attachments never come out of either.

Why pasting a Google Docs link does not work

No. ChatGPT holds no Google session, so a Docs or Drive link returns a sign in page. The 30 second export route, and the format that keeps your tables intact.

Pages, Numbers and Keynote files in ChatGPT

Not usefully. A .pages, .numbers or .key file stores its text as compressed binary. Export to Word, Excel or PowerPoint first, and here is which keeps most.

Can ChatGPT read EPUB files? Yes, with 2 catches

Yes. An EPUB is a zip of HTML, so the text extracts cleanly. DRM stops you dead and book length breaks it quietly. How to convert one and split it by chapter.

Can ChatGPT read log files?

Yes. Logs are plain text and upload fine up to 512 MB, but answer quality collapses far below that. The jq and grep lines that cut a log to what matters.

Can you upload an MP3 or WAV file to ChatGPT?

No. OpenAI lists 4 upload families: text, spreadsheets, presentations, documents. Audio is in none of them. Transcribe it, and keep the speaker labels.

Can ChatGPT read PowerPoint PPTX files?

Yes, PPTX uploads work. But every plan except Enterprise strips the images out, so charts and diagrams never reach the model. Speaker notes usually do.

Can ChatGPT read RAR, 7z or tar archives?

No. RAR, 7z, tar and tar.gz are never unpacked, so 1 upload buys nothing. How to extract each format, handle split .part1 sets, and what to send instead.

Can ChatGPT read RTF files? Yes, and the 1 case that fails

Yes. RTF is a document format and uploads like any other, inside the 512 MB and 2 million token caps. The 1 case that fails, and the 10 second fix for it.

Can ChatGPT read SRT and VTT subtitle files?

Yes. SRT and VTT are plain text and upload like any other file. Strip the timestamps on anything feature length, since they take more room than the dialogue.

Can ChatGPT read Word documents?

Yes, up to 512 MB per file, and DOCX is among the most reliable formats. Every plan but Enterprise discards the images, and how to spot what was dropped.

Can you upload an MP4 or other video to ChatGPT?

Video is not among the 4 file families OpenAI lists for uploads. Transcribe it and upload the .txt instead, plus what to do when the visuals are the point.

CSV and Excel limits in ChatGPT: about 50 MB, and no token cap

Spreadsheets cap around 50 MB and are exempt from the 2 million token limit that truncates documents. Why a 200,000 row CSV goes in when a report does not.

Which image formats can you upload to ChatGPT, and the 20 MB cap

PNG, JPEG, WEBP and GIF all work, capped at 20 MB each. PSD, AI and RAW do not. Which to pick for a screenshot, and when text beats an image entirely.

ODT, HWP, PSD and other formats nobody documents

Yes, ODT uploads and reads fine. OpenAI publishes no extension list, so here is the test for any unusual format, and when exporting beats trying it.

Markdown, JSON, XML and code files in ChatGPT

Markdown, JSON, XML and code are plain text, so ChatGPT reads them cleanly up to 2 million tokens and 512MB. Why .md beats PDF and DOCX for a long document.

What file types can ChatGPT read in 2026? 7 fail silently

ChatGPT reads 4 file families and OpenAI publishes no extension list. 7 uploads go through cleanly and give it nothing to read, with the fix for each.

Error messages explained

The exact message you hit, what causes it, and how to get past it.

The 3 causes of "something went wrong while analyzing your file"

The analysis step failed, not the upload, so file size is not the cause. 3 things explain almost every case. Retry once, test a 2 line file, then check yours.

ChatGPT says your file is too large. Which of the 4 caps did you hit?

4 caps produce this message: 512 MB per file, 50 MB spreadsheets, 20 MB images, 2M tokens of text. Under 10 MB means length, and compressing will not help.

Why ChatGPT says "you can send up to -1 files"

A negative count is a display fault, not a real limit: your allowance minus whatever is already counted. 5 things push it under zero, and the fixes in order.

"You may only upload 1 file at a time" in ChatGPT

20 files per message is the web cap since February 2026, so this is a per message block, not your account or your quota. Send 1 per message, or bundle them.

"You have reached our limit of file uploads": the 2 causes

2 documented causes: failed uploads count toward the 80 per 3 hours cap, and 25 GB of storage never clears on its own. Deleting chats no longer frees it.

Why ChatGPT says your conversation is too long

The chat is full, not the file. Messages, replies and uploaded files share one total, so the same file uploads fine in a new chat. How to move across cleanly.

ChatGPT cannot read your scanned PDF

Every plan except Enterprise extracts digital text and discards images, and a scan is all image. A 2 second test to confirm it, then the OCR route that works.

ChatGPT file upload not working? Find your error here

Hit the limit having uploaded 1 file? Failed attempts count toward the 80 per 3 hours cap. Every ChatGPT upload error here, with the fix that clears it.

ChatGPT file upload stuck loading? The 4 causes, and the 1 minute test

An upload that spins forever has 4 common causes. A 1 line text file in incognito tells you which one, in under a minute. Stop retrying: failed attempts count.

Why ChatGPT forgets a file you already uploaded

Nothing deleted the file. The chat outgrew its context window, so the oldest content stopped being sent. Re-attach it, and the setup that stops it recurring.

ChatGPT will not accept that file type. Convert it, do not rename it.

ChatGPT rejects the format before anything uploads, so renaming the extension never helps. Convert to PDF, DOCX, TXT or CSV, and tell 3 refusals apart.

Limits by plan

What Free, Plus, Pro and Team actually allow.

Can you upload files to ChatGPT on a phone?

Yes. The ChatGPT mobile apps use the same 512MB and 2 million token caps as the web, since limits belong to your account. What a phone cannot do, and the fix.

Every ChatGPT attachment limit: 20 a message, 3 a day on Free

5 attachment caps stack: 20 per message, 3 a day on Free, 80 every 3 hours, per project, per GPT. A 30 second diagnosis for which one stopped you.

Do the Mac and Windows apps have different upload limits? No, still 512 MB

512 MB per file and 3 uploads a day on Free apply identically in the Mac and Windows apps: one account, one pool. The one thing only a browser can do.

ChatGPT file upload limit, free plan: 3 a day in 2026

ChatGPT Free: 3 file uploads a day, 500 MB Library storage, 5 files per project. What still works when you are out, and what Go at $8 changes.

ChatGPT image upload limits: 20 MB, and why PDF pages count

20 MB per image is the size cap, and rarely what stopped you. The limit on how many is, and PDF pages count toward it. What resets it, and how to send less.

ChatGPT max PDF size is 512 MB, so why does a 4 MB file fail?

512 MB is the hard ceiling and almost nobody reaches it. A 4 MB scanned PDF fails anyway, because a scan holds no text layer to extract. How to tell them apart.

How long can a single ChatGPT message be? The 10,000 character rule

No published character cap, but paste over 10,000 characters and ChatGPT turns it into a file upload, spending an upload you never meant to spend.

ChatGPT PDF page limit: none published, but 2M tokens caps it

OpenAI publishes no page limit. Size stops at 512 MB, length at 2 million tokens, and length truncates a PDF silently. The question that reveals how far it got.

ChatGPT Plus raises 3 a day to 80 every 3 hours, and little else

Plus gives 80 files every 3 hours instead of 3 a day, plus 25 files per project. The 2M token cap is identical on every plan, so long files still get cut.

How many files can you put in a ChatGPT Project? 5, 25 or 40

Free 5, Go and Plus 25, Pro and Business 40 files per project. OpenAI's own FAQ still prints 20 for Plus, and the project allowance is not your chat one.

The ChatGPT storage limit: 25 GB, and the 500 MB one nobody mentions

25 GB per user, and a separate 500 MB Library cap on Free that bites first. Deleting old chats no longer frees either one, so here is what still does.

What the business plans change about uploads, and what they do not

512 MB per file, 2M tokens, 25 GB per user: identical on Team, Business and Enterprise. Only Enterprise changes what ChatGPT can read inside a PDF.

Does the ChatGPT upload limit depend on the model?

No. 512 MB per file and 2M tokens are checked at upload, before any model sees the file. The 1 row in 9 that the model does change, and what to change instead.

How many knowledge files can a custom GPT hold? 10, for its lifetime

10 files per GPT, and that is a lifetime cap rather than per conversation. They also eat your 25 GB storage, and GPT creation has left personal accounts.

How many files can you upload to ChatGPT? All 6 caps in one place

20 per message on web, 3 a day on Free, 80 every 3 hours, 10 per custom GPT. Six caps that stack, plus the one that never resets however long you wait.

How many PDFs can you upload, and how many get read?

How many PDFs you can upload on Free, Plus, Pro, in Projects and to a custom GPT, plus the length cap that decides how much of a long PDF gets read.

What happens when ChatGPT's context window is full

The oldest part of the conversation stops being sent, with no error and no marker in the reply. What survives, what goes first, and the test that proves it.

When does the ChatGPT upload limit reset? 3 hours, rolling

OpenAI publishes no reset time for the Free cap of 3 a day. The general cap of 80 files rolls over 3 hours, freeing slots gradually, so an hour gets you moving.

Which ChatGPT plan reads images inside PDFs?

Only Enterprise gets visual retrieval for PDFs. Free, Go, Plus, Pro and Business extract text and discard images, which is why charts and scans return nothing.

Working with documents

Getting better results once the file is in.

ChatGPT CV and resume review that is worth having

Ask for a review and you get praise. Ask it to argue for rejecting you, or to sit with 60 applications and 10 minutes, and the criticism finally arrives.

12 ways to get better answers out of ChatGPT about your documents

12 tips, and the first is a 30 second check, because long files are truncated with no warning. Then how to force quotes and stop invented answers.

How to get something useful out of a meeting transcript

Do not ask for a summary. Ask for 4 things: decisions, commitments with owners, open questions, disagreements. Keep the speaker labels or you lose every name.

The 30 second check for whether ChatGPT read your whole document

Files past 2 million tokens are truncated with no warning. One question about the final page tells you how much ChatGPT really read, in 30 seconds.

Does OpenAI train on the files you upload to ChatGPT?

Consumer plans: yes, unless you switch it off in data controls. API and Enterprise are excluded. Files go in 30 days, but deleting the chat no longer does it.

How to analyse a large JSON dataset with ChatGPT

JSON hits the 2 million token cap fast. Send the schema and a short sample, agree the approach, then convert tabular JSON to CSV, which is exempt from it.

How to analyse a whole book with ChatGPT

Text files cap at 2 million tokens, so a full book will not fit in one go. Work chapter by chapter with a running notes file, and know when to stop.

How to analyse financial statements with ChatGPT

Export the statements to CSV rather than uploading the PDF report. Spreadsheets are exempt from the 2 million token cap. Then check every figure it hands back.

Reading research papers with ChatGPT

Upload a paper and ChatGPT praises it. The prompts that turn it on the methodology instead, the statistics it gets wrong, and where to stop trusting it.

How to build a knowledge base in a ChatGPT Project

Free gets 5 project files, Plus 25, Pro 40. What belongs in project files, what to leave in a single chat, and why a smaller set gives sharper answers.

How to compare two documents with ChatGPT properly

Uploading both files at once blends them into mush. Summarise each in its own chat, then compare the 2 summaries in a third, and attribution stays intact.

How to pull specific data out of a document with ChatGPT

Name every field, name the format, demand the source: "Return a CSV with columns date, party, amount". The 3 rules that stop ChatGPT filling gaps for you.

How to extract tables from a PDF with ChatGPT

Ask for CSV, 1 row per source row, values copied exactly, empty fields for empty cells. Then check it: a misread table comes back looking perfectly clean.

How to fact check a document with ChatGPT, and what it cannot do

ChatGPT has no source to consult, so its verdicts are guesses. Use it to extract and rank the claims that need checking, then the prompt that keeps it honest.

How to get ChatGPT to cite pages and sections

Text extraction strips page breaks, so ChatGPT rarely knows the page. Ask it to quote the heading and the exact sentence, then search the PDF for that line.

Getting a whole website into ChatGPT, page by page

Pasting a URL gets you 1 page, and only when browsing works. Save each page as text, flatten them into one upload with URL headers, and quotes stay traceable.

How to keep a document in context in ChatGPT

There is no pin or lock for an attachment, so documents drop out of long chats silently. How to set the chat up, re-anchor when answers slip, when to restart.

How to make ChatGPT follow a document's structure

Extract the outline first, then hand it back as a template. Output arrives under your own section headings, in order, instead of one summary that flattens them.

How to actually revise from a textbook with ChatGPT

A chapter summary is the least useful thing to ask for. Upload the chapter and be tested on it instead, with worked examples and questions in exam format.

Summarising a legal document with ChatGPT

Summarise a contract, judgment or policy clause by clause, never in one sweep. What ChatGPT locates reliably, and why 'no such clause' is never proof.

How to summarise a YouTube video with ChatGPT in 4 steps

ChatGPT cannot open a YouTube link or the video file, so use the transcript. 4 steps to pull it out and paste it in, plus what a text only view misses.

How to summarise long documents with ChatGPT

Anything past 2 million tokens is cut off silently, so run the last section test before you read the summary. Then the prompts that stop it coming back bland.

How to translate a long document with ChatGPT

A translation runs as long as its source, so it needs 2x the room a summary does. Work section by section, and keep the glossary that stops 1 term becoming 3.

How to turn a document into slides with ChatGPT

Ask for a tab indented outline rather than markdown and PowerPoint imports it straight. One idea per slide, notes kept separate, and the prompt for both.

How to get a Notion export into ChatGPT

ChatGPT does not open archives, and a Notion export is a zip of markdown files. Unzip it, join every page into 1 text file with headers, upload that.

How to work with many documents in one ChatGPT chat

Ten files in one conversation blur into one vague source. Label each on upload, order them deliberately, and know when to open a second chat.

Using ChatGPT for contract review

3 things it does reliably: plain-English translation, spotting missing clauses, finding one-sided terms. 4 it cannot. Plus the data setting to check first.

Why ChatGPT gives different answers about the same document

3 causes: silent truncation, sampling randomness and context eviction. How to tell which one you have in under a minute, and the question that separates them.

Comparisons Comparisons

How ChatGPT stacks up against the alternatives for document work.