Compress PDF to 400 KB — Free, In Your Browser
- Files stay on your device
- Free, no sign-up
- No watermark
- Works offline after first use
Compress your file
Target : 400 KB
Drop a file herePick a file from your device
or paste it from the clipboard
Processed on your device. Nothing is uploaded.
Pick a PDF and get a copy of 400 KB or less. A larger PDF is saved as images, so its text is no longer selectable; a smaller one keeps it.
How it works
- Choose a PDF document.
- Lossless mode re-saves the file without touching the content; guaranteed mode turns the pages of a file over the limit into images.
- The tool finds the highest resolution and quality that fit the limit.
- Download the smaller PDF.
Didn’t fit? What to do
- 400 KB leaves room for a short multi-page scan: still drop blank and duplicate pages.
- Photos inside a PDF take most of the space; a text-only PDF may already fit.
- Crop phone photos of documents to the paper edge before making the PDF.
- If the form allows several files, upload each document separately.
Frequently asked questions
My PDF is mostly text. Will it be turned into images?
Only if it is larger than 400 KB. A PDF already under the limit is kept as it is, with selectable text.
Why can't I select text after compressing?
To fit in 400 KB, each page of a larger PDF is rendered as an image. The document looks the same but is no longer searchable.
Is 400 KB 400,000 or 409,600 bytes?
Forms differ. The tool targets 400,000 bytes, which passes either way.