Free PDF compressor to 400 KB
Shrink a PDF to under 400 KB for an upload limit, in your browser. Free, nothing uploaded.
Drop files here
or browse your device — one file or many; images, documents, spreadsheets, audio, video, archives, 3D models
Choose the formats
Your file never leaves this device.
Drop the PDF and get it back under 400 KB — the target is preset. Strong compression redraws pages to fit; light compression keeps the text selectable. Nothing is uploaded: the work happens inside your browser, on your own device.
How to use it
- Drop the PDF Scanned documents, photo PDFs and ordinary text PDFs all work.
- Choose the size and method Type the limit in KB. Use Strong for scans and picture-heavy files; Light when the text must stay selectable.
- Compress and download The result shows the new size. If a target is unreachable without making pages unreadable, you get the smallest readable version and a note saying so.
Questions
- How do I compress a PDF to 400 KB?
- Drop it above with 400 KB already set, keep Strong compression for scans and picture PDFs, press the button and download.
- Will the text still be readable?
- Yes. Pages are redrawn at the resolution needed to hit 400 KB; if that would make them unreadable you get the smallest readable version and a note instead.
- Can I keep the text selectable?
- Choose Light compression. It keeps the text but cannot shrink pictures much, so a scan may not reach 400 KB that way.
- Is the PDF uploaded?
- No.
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