# How to compress a PDF for email without making it hard to read > Shrink a PDF for email without making it unreadable: cut pages you don’t need, try lossless compression first, lower quality only as far as needed, and check small text before you send. Canonical: https://mypdf.space/guides/pdf-too-large-to-email Last updated: 2026-10-10 ## Direct answer First delete pages the recipient doesn’t need. Then try [Compress PDF](https://mypdf.space/tools/compress) in **Keep text** mode, which shrinks the file without changing how the pages look. If that isn’t enough, use **Target size** with your email limit; it lowers image quality one step at a time and stops as soon as the file fits. Before you send, zoom in on the smallest text. Personal Gmail accounts accept attachments up to 25 MB; for work and school accounts the limit is set by the organisation. For form uploads with small limits, the [compress-to-size pages](https://mypdf.space/compress-pdf) open the tool pre-set to 100 KB, 1 MB and more. ## Introduction Your email bounces with “attachment too large”, or Gmail quietly swaps your PDF for a Google Drive link. The usual fix is to run the file through a compressor on its strongest setting, and the recipient gets a blurry document where the footnotes can’t be read. You can almost always do better by matching the method to whatever is making the file big, and by stopping as soon as it fits. ## Compress a PDF for email, step by step 1. Cut what isn’t needed. Remove blank pages, appendices and duplicates with [Delete pages](https://mypdf.space/tools/delete-pages), or keep only the pages that matter with [Extract pages](https://mypdf.space/tools/extract-pages). Fewer pages is the only saving with no quality cost at all. 2. Open [Compress PDF](https://mypdf.space/tools/compress) and drop the file in. It’s processed in your browser, not uploaded. 3. Try **Keep text** first. It rebuilds the file’s structure and clears the title, author, subject and keywords, without re-rendering any page. Text and graphics look exactly as they did. 4. If the file is still too big, switch to **Target size** and enter a number a little under your limit. It tries Keep text first, then re-renders the pages as images at 150 DPI, stepping down (120, 100, 90, 72, 60, 50) until the file fits. 5. Open the downloaded file and check it, as described in the next section, before you attach it. 6. If the target couldn’t be reached, split the document with [Split PDF](https://mypdf.space/tools/split) and send it in parts, or share a link instead. ## Know your real limit For personal Gmail accounts the attachment limit is 25 MB. If your attachments go over it, Gmail doesn’t bounce the message: it removes the attachment and puts a Google Drive link in the email instead. For Google Workspace work and school accounts, the administrator sets the sending and receiving limits, so the number can be lower ([Gmail Help](https://support.google.com/mail/answer/6584?hl=en&co=GENIE.Platform=Desktop)). Other email providers, company mail servers and the recipient’s inbox all have their own caps, and the smallest one wins. If you don’t know the recipient’s limit, leave some headroom instead of aiming right at 25 MB. Upload portals usually state their limit in the error message; use that number. ## What makes a PDF big A 40-page text report is usually somewhere between a few hundred kilobytes and a couple of megabytes. When a PDF runs to tens of megabytes, the weight is almost always images: - **Scanned pages.** Every page is a photo of paper, stored at whatever resolution the scanner used. - **Photos pasted into documents** at full camera resolution, even though they’re displayed at postcard size. - **Embedded fonts, attachments and leftover data.** Usually smaller, but it adds up in files that have been edited many times. > **tip:** If Keep text barely changes the size, your file is image-heavy. That’s expected. It’s the signal to move on to Target size, not a sign that compression failed. ## Check readability before you send Compression problems show up in the smallest details first, so check those rather than the headline: - Zoom to 100% on the page with the smallest print: footnotes, figures in a table, the fine print on a form. - Look at thin lines, signatures and stamps. They blur before body text does. - If the document will be printed, print one page. Screens hide softness that paper shows. - Open it on a phone if that’s where the recipient is likely to read it. ## What happens to text when pages are re-rendered Target size and Max shrink work by turning each page into a JPEG image at a lower resolution. To keep the file usable, mypdf places the original text invisibly behind each image, so search and copy-and-paste still work. The visible page is now a picture, though: zooming in won’t make small text sharper, and the text can’t be edited in place. At around 120 to 150 DPI most documents stay comfortable to read on screen. Below about 100 DPI, small type and thin lines start to break up. Target size stops at 50 DPI. If the file still doesn’t fit, you get the smallest version it managed and a note saying the target wasn’t reachable, rather than an unreadable file presented as a success. If anything is hard to read, go back a step: choose a slightly larger target, or split the file instead of squeezing it further. - [Open Compress PDF](https://mypdf.space/tools/compress) ## When splitting beats compressing A 200-page scanned contract may simply not fit under 10 MB at a readable quality. Three readable parts are better than one attachment nobody can read. Split by page range so each part is a complete section, such as a chapter, schedule or appendix, and number the parts in the file names. If the document is confidential, size isn’t the only thing to sort out before you attach it. [How to prepare a confidential PDF for sending](https://mypdf.space/guides/share-pdf-securely) covers redaction, metadata and encryption. - [Open Split PDF](https://mypdf.space/tools/split) ## Limits - Keep text rebuilds the file and can drop bookmarks and interactive form fields. Check forms after compressing. - Target size and Max shrink turn pages into images. The visible text can’t be edited, though a hidden copy keeps search working. - A PDF that’s already well optimised can come out the same size or slightly bigger. Keep the original in that case. - Everything runs on your device, so very large scans can be slow or fail on a phone. A laptop copes better. - Password-protected PDFs have to be unlocked first. ## FAQ ### What is the maximum attachment size for Gmail? 25 MB for personal Gmail accounts. If your attachments are larger, Gmail replaces them with a Google Drive link. For work and school accounts, the administrator sets the limit. ### Which compression setting should I try first? Keep text. It doesn’t change how the pages look. Move on to Target size only if the file is still too large. ### Will compressing make my PDF blurry? Keep text won’t. Target size and Max shrink re-render pages at a lower resolution, which can soften small text and fine lines. That’s why it’s worth checking the smallest print before you send. ### Why is my compressed PDF bigger than the original? Some PDFs are already compact, and rebuilding them adds a little overhead. If that happens, send the original. ### Is my PDF uploaded when I compress it? No. Compression runs in your browser and the file stays on your device. ## Related - [Compress PDF](https://mypdf.space/tools/compress) - [Delete pages](https://mypdf.space/tools/delete-pages) - [Extract pages](https://mypdf.space/tools/extract-pages) - [Split PDF](https://mypdf.space/tools/split) - [Remove metadata](https://mypdf.space/tools/remove-metadata) - [All guides](https://mypdf.space/guides)