Compress PDF to fit any email you can't get past.

Gmail caps email attachments at 25 MB total — beyond that it auto-converts to a Drive link. Outlook.com is 20 MB by default, Outlook on corporate Exchange is typically 10–20 MB depending on the admin policy. Smaller caps are common for HR portals (5 MB), ATS systems (1 MB), and legal filings (10 MB). This tool lets you target any of these with one click.

Open this page, drop your PDF, pick the 25 MB target preset, and let the iterative reducer dial in image compression until the output fits. Text stays vector (not rasterized) so readability is preserved. The compressed PDF downloads directly; there's no upload to any server.

Yes — text stays crisp at every compression level because we never rasterize the text layer. Embedded images are re-encoded at a quality level chosen to hit your target without visible artifacts at normal reading zoom. For quality-critical documents, pair this workflow with the lossless compressor below.

No. The compression runs entirely in your browser via pdf-lib and the browser's image encoders. DevTools → Network will show no request carrying your file. This matters for confidential attachments — legal docs, medical records, tax forms — where a third-party upload wouldn't be acceptable. Same model as the without-upload compressor.

No. No account, no email capture, no daily limit. Drop a PDF, pick a target, download. Sign-in is only relevant for AI features (unrelated to compression).

Open this page in Safari (iOS) or Chrome / Firefox (Android). Drop the PDF from your files app, pick the 25 MB preset, and download — the compressed file saves to Downloads or Files and you can attach it directly to Gmail. Same flow, no mobile app install needed.

Base64-encoded attachments grow ~33% during transmission, and mail servers enforce a receive-side cap that accounts for the encoding overhead. Gmail's actual raw cap is ~25 MB; Outlook.com is ~20 MB; corporate Exchange admins often set it lower (10–15 MB) to control storage. When in doubt, compress to 10 MB — it fits everywhere.

Yes — drop several files and the tool processes them sequentially, each targeting your chosen size cap. No daily batch limit. If you need them combined first, merge them locally before compressing so the combined attachment fits the email limit.

No catch — compression runs on your CPU, not ours, so there's no per-job server cost to recoup. No watermark, no signup, no daily cap. Our paid tiers unlock AI-powered features (chat with PDF, translate) that genuinely cost money per request, not compression.

Yes, with the password. Everything runs in the browser so your password never leaves the page. Unlock → compress to the email target → optionally re-apply the password before saving, all locally.

Very image-heavy PDFs may resist aggressive compression. In that case: (1) switch to Scanned mode if the document is a scan, (2) remove non-essential pages, (3) split the file in two email submissions, or (4) use an encrypted link instead of the attachment. The tool shows you the minimum achievable size so you know when to pivot.

Yes. Load the page once with a connection, then switch to airplane mode — compression continues to work because it's in-browser. The same local model applies to other conversions that need to work offline.

Yes. The output is a standard PDF with intact structure, metadata, text layer, and bookmarks. Every major mail client, reader, and mobile PDF viewer opens it normally. No format warnings, no conversion loss.

Different target, same tool. 25 MB for Gmail is generous and usually doesn't need aggressive image compression. 1 MB for ATS portals is tight and requires stronger image quality trade-offs. See the 1 MB target guide for the tighter case or arbitrary target reduction for custom sizes.

Use an end-to-end encrypted link instead of an attachment. The recipient clicks the link and their browser decrypts the file locally — no mail-server size cap, no plaintext copies in Sent / Inbox archives, and the link expires on a schedule you set.