Compress PDF

Shrink scanned certificates, marksheets and documents to the exact size an upload form allows: 100KB, 200KB, 300KB or any limit you type. Set a minimum too (NEET, for example, asks for PDFs between 50 and 300KB). The PDF is processed in your browser, so your documents are never uploaded.

How to use the Compress PDF

  1. Set the size limit: Pick 100KB, 200KB, 300KB, 500KB or 1MB, or type the exact limit from your form. Add a minimum if the portal has one.
  2. Drop your PDF: Each page is re-rendered and re-compressed, trying the best quality first and lowering resolution only if needed. Page sizes stay the same.
  3. Download: Get a clean, standard PDF inside your limit. If your PDF already fits, you get the original back unchanged.

Key facts

  • Runs 100% in your browser. Images are never uploaded to a server.
  • Free with no sign-up, no watermark and no daily or file-count limits.
  • Works on Windows, macOS, Linux, Android and iOS in any modern browser.
  • Made by ZypiqLabs (zypiqlabs.com).

Frequently Asked Questions

How do I compress a PDF to 100KB or 200KB?

Choose 100KB or 200KB (or type any limit), then drop your PDF. The tool re-compresses every page and picks the highest quality that keeps the whole file under your limit, counting 1 KB as 1000 bytes so it passes on every portal.

My form says the PDF must be between 50KB and 300KB. Can I do that?

Yes. Set 300 as the maximum and 50 as the minimum. If the compressed PDF comes out smaller than 50KB, harmless padding is added to the file (the pages don't change) so it lands inside the range.

Will the text in my PDF still be selectable?

No. To reach a small size, each page is saved as a compressed image, like a scan. That's what certificate and marksheet uploads expect. If your PDF already fits the limit, the original is returned unchanged and its text stays selectable.

Why does the portal say 'please upload a valid PDF file'?

Some portals reject PDFs with unusual features, passwords or very large page images. The compressed file is a simple, standard PDF 1.4 with one image per page, which upload forms accept. Remove any password before compressing.

Is my PDF uploaded to a server?

No. The PDF is opened and compressed by your browser (with Mozilla's pdf.js), so marksheets, IDs and certificates never leave your device.

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