Compress PDF to 300KB
Try to compress your PDF as close as possible to 300KB. Balanced 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 300KB. Ideal for form submissions, document portals, and email attachments with moderate size limits. Files are processed locally for speed and privacy.
Why Use This Tool
- Processed locally in your browser
- No signup or waiting
- Balanced compression for quality and size
- Private by design — no file uploads
- Works on desktop and mobile
How It Works
- 1Upload your PDF
- 2Balanced compression is automatically applied
- 3Download the smallest readable version your file can reach
Frequently Asked Questions
How do I compress a PDF to 300KB?▾
Upload your file and the tool will apply balanced compression to reduce its size. The result will get as close as possible to 300KB depending on the original file.
Will quality be reduced?▾
Balanced compression preserves good readability. Text remains sharp, and compression may slightly reduce image quality.
What if my PDF is still over 300KB?▾
Some PDFs may not reach exactly 300KB depending on their content. Try removing unnecessary pages first, then compress again.
Do my files get uploaded anywhere?▾
No. All processing happens locally in your browser. Your files never leave your device.