Upload PDF
Upload the PDF you want to shrink.
Shrink any PDF down to 50KB for strict upload limitsCompress PDF to 50KB free in your browser. Shrink any PDF down to a 50KB file for uploads with strict size limits. No signup, no watermark.
Shrink any PDF down to 50KB for strict upload limits
Drag images here or choose files
PDF file. Compressed privately in your browser. Nothing is uploaded.
Pages are re-rendered as images and rebuilt into a new PDF tuned to land at or under 50KB. Best for forms and uploads with strict size limits. Nothing is uploaded.
Upload the PDF you want to shrink.
Click "Compress to 50KB" and wait for the processing to finish.
Download the result and check it is under 50KB.
Job applications, exam registrations and government portals often cap uploads at exactly 50KB. This tool is built for that one job: take any PDF and squeeze it down to 50KB or less without you fiddling with quality sliders.
It re-renders every page as an image and rebuilds the PDF, binary-searching the highest JPEG quality that still fits the limit. If your file is already under 50KB it says so straight away. If the limit cannot be hit, you get the smallest readable version and an honest explanation instead of a fake success.

Create professional invoices online for free: no signup, no watermark, just a clean PDF in minutes.
Read article →
Cut JPG, PNG and WebP file sizes by up to 80% with no visible quality loss. Here is how image compression works and how to do it free in your browser.
Read article →