Compress PDF to 300KB
Reduce your PDF to 300KB or less — free, fast, and no watermark.
Drag & drop your files here
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Max 1 file · Up to 100MB each
Compress PDF to 300KB online, free
Compress PDF to 300KB online for free. Upload your PDF, and our compressor automatically reduces it to 300KB or less while keeping it as sharp as possible — no signup, no software, and no watermark. It's exactly what you need when an upload portal, email attachment limit, or application form caps your PDF at a specific size.
Rather than trial-and-error with quality presets, enter 300KB as your target and we progressively optimize the embedded images until your PDF fits under the limit — while keeping the text crisp and selectable. Your file is encrypted in transit and deleted automatically after processing.
How to compress pdf to 300kb
- 1
Upload your PDF
Drag and drop your file into the box above, or click to select it from your device.
- 2
Confirm the 300KB target
The target size is already set to 300KB for you — adjust it if you need a different limit.
- 3
Compress
Click the compress button and we reduce your file to 300KB or less in seconds.
- 4
Download
Save your compressed file. It's automatically deleted from our servers shortly after.
Compress PDF to 300KB — FAQ
How do I compress a PDF to 300KB?+
Upload your PDF above, make sure the target is set to 300KB, and click compress. We reduce the file to 300KB or less and give you the result to download — completely free.
Will compressing to 300KB ruin the quality?+
Text stays sharp and selectable. To reach 300KB we mainly lower the resolution of embedded images, which is the part that takes up the most space in a PDF.
What if my PDF can't reach 300KB?+
We always return the smallest usable version we can produce. If a file simply can't be squeezed under 300KB without becoming unreadable, you'll get the closest result and a note that it's slightly over target.
Is it free and private?+
Yes. Compressing PDF to 300KB is 100% free with no signup or watermark. Files are uploaded over encrypted HTTPS and automatically deleted from our servers a short time after processing.