Compress PDF to 100KB
Try to compress your PDF as close as possible to 100KB. Strong compression applied locally in your browser. No upload required.
Free up to 100 MB · No signup · No ads · Your files never leave your device
Drag & drop your file here
or click to browse (.pdf, max 100MB)
Processed locally in your browser — your file is never uploaded.
Use this tool to reduce your PDF file size as close as possible to 100KB. Ideal for job applications, form uploads, and strict attachment limits. Files are processed locally for speed and privacy.
Why Use This Tool
- Processed locally in your browser
- No signup or waiting
- Strong compression for strict size limits
- Private by design — no file uploads
- Works on desktop and mobile
How It Works
- 1Upload your PDF
- 2Strong compression is automatically applied
- 3Download the smallest readable version your file can reach
Frequently Asked Questions
How do I compress a PDF to 100KB?▾
Upload your file and the tool will apply strong compression to reduce its size. The result will get as close as possible to 100KB depending on the original file.
Will quality be reduced?▾
Strong compression prioritizes file size reduction. Text remains readable, but image-heavy PDFs may show some quality loss. For the best balance, try Medium compression first.
Is this safe to use?▾
Yes. Files are processed locally in your browser and never leave your device. No data is sent to any server.
What if my PDF is still over 100KB after compression?▾
Some PDFs may not reach exactly 100KB depending on their content. Try removing unnecessary pages first using our Delete Pages tool, then compress again.