Compress PDF to 150 KB
Get any PDF under 150 KB for online forms and uploads. Set the size, drop the file — done in seconds, right on your device.
- 🔒 No upload
- ∞ No limits
- 🎯 Exact size
- ✓ No sign-up
Drop PDFs here or choose filesTap to choose PDFs
🔒 Compressed on your device — never uploaded · No limits · No sign-up
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Key facts
- Guarantees the output is at or below 150 KB when possible (counting 1 KB = 1000 bytes, so it passes either convention), and tells you if it isn't.
- Text and links stay selectable; only images are re-encoded unless flattening is needed.
- Rough capacity of 150 KB: ~10 text-only pages, ~2 grayscale scanned page(s), less than one full-colour photo page(s).
- Runs in your browser: files are never uploaded. Free, unlimited, no watermark.
How to compress PDF to 150 KB
- Click “Choose files” or drop your PDF onto the box above.
- The size is already set to 150 KB — change it if your form needs something else.
- Wait a few seconds while the tool finds the best quality that fits.
- Click “Download” and upload the compressed PDF to your form.
Who needs a PDF under 150 KB?
Admission documents, experience letters and multi-page certificates on job and education portals.
Tips to fit 150 KB with the best quality
- 2–3 scanned pages fit at good quality.
- Colour stamps and signatures stay legible at this size.
- Choose “Exact size” so the result is guaranteed below 150 KB, not just “smaller”.
How we hit 150 KB exactly
Most compressors apply one fixed setting and hope the result is small enough. We search for it: first we remove waste (duplicate objects, metadata, thumbnails), then re-encode the images at progressively lower resolution and quality, checking the size after each try and keeping the highest quality that is still under 150 KB. Only if images alone can't get there do we flatten pages, and we say so on screen.
Frequently asked questions
Is 150 KB the same as 0.15 MB?
Close. Sites count a KB as either 1000 or 1024 bytes. We always aim for 1000 bytes per KB (150 KB = 150,000 bytes), so the file is accepted under either convention.
Are my PDFs uploaded to a server?
No. Compression runs entirely inside your browser using JavaScript and WebAssembly-grade libraries. Your file never leaves your device, so confidential documents stay private. You can even disconnect from the internet after the page loads and it keeps working.
Will my text stay selectable and searchable?
Yes in the normal modes: we keep text, fonts, links, bookmarks and form fields and only re-encode the images inside the PDF. Only if you ask for an exact size that cannot be reached that way do we flatten pages into images — and the tool tells you when that happens.
Is there a file size or daily limit?
No daily limits, no sign-up and no watermark. The only limit is your device's memory — most phones handle PDFs up to a few hundred MB and computers handle more.
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