Many upload portals, collaboration platforms, and document management systems enforce a 5MB file size cap. ModernPDF compresses your PDF locally in your browser -- adjust the...
Open Compress PDFGmail's 25MB limit still too tight? Get under 5MB fast.
Drop file. See size at different compression levels.
Light compression often gets under 5MB with near-original quality.
Confirm size and download. Ready for portal upload.
Choose a PDF from your device. Drag and drop or click to browse. Your file stays on your computer.
Your browser handles all the work using JavaScript. Nothing is uploaded to any server. Processing is instant.
Save the processed file to your device. That's it — no account, no email, no waiting.
Portal upload limits exist for practical reasons -- they prevent system overload and ensure reasonable processing times. But they create a workflow gap: your document is too large for the system, so you need a compression step before uploading it.
If that compression step involves a server-based tool, your document takes an unplanned detour through third-party infrastructure before reaching its intended destination. The portal operator almost certainly did not anticipate or approve of your document visiting a random compression service first.
ModernPDF compresses in your browser using WebAssembly. Your document goes from your device to the destination portal, smaller but never having been routed through any unintended infrastructure. The compression step adds no additional exposure to your document's journey.
Presentations with embedded images, scanned multi-page documents, photo-heavy reports, and design-oriented PDFs typically compress very well. Even light compression settings can often halve the file size of image-heavy documents. Text-heavy documents are usually already well under 5MB.
Yes. Scanned documents compress significantly because each page is essentially a large image. A 20-page scan at 15MB can typically compress to well under 5MB with medium settings while remaining clearly legible. Heavy compression can achieve even smaller sizes if screen-only viewing is acceptable.
Try medium or heavy compression settings. The tool shows the output size at each level so you can see the trade-off immediately. If the file is extremely large even after heavy compression, consider splitting it into logical sections using Split PDF and uploading each section separately.
Yes. Compression targets image data and redundant file structures, not functional elements. Interactive form fields, clickable hyperlinks, bookmarks, searchable text layers, and all other functional PDF features remain fully operational in the compressed output.
Yes. The document is processed entirely locally in your browser and never leaves your device during compression. Compress first, then upload directly to the government portal. No third-party service is involved at any point in the compression step.
Free to start. Files stay on your device. Upgrade to Pro for unlimited use.
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