📄 Universal PDF Compressor
Compress PDF to 100KB, 200KB or 500KB for Online Forms
Marksheet, certificate ya resume ka PDF bahut bada hai? Reduce the PDF size to the exact KB limit that job portals, university admissions and Sarkari online forms accept. Free, no login, and your file never leaves your device.
1. Upload your PDF
2. Target size
3. Compression
Result
Upload a PDF, choose a size and press Compress PDF.
100% Private & Secure — Files are processed locally on your device and never uploaded to any server.
How to reduce PDF size for online forms
- 1
Upload the PDF
Pick the certificate, marksheet, resume or form you need to upload. It stays on your phone or computer.
- 2
Choose the size limit
Select 100 KB, 200 KB, 500 KB or 1 MB, or type the exact limit from the form.
- 3
Pick compression
Standard keeps text selectable. High is for scanned pages and reaches small KB limits.
- 4
Check and download
Open the file once to confirm it is readable, then upload compressed-document.pdf on the portal.
Why online forms reject PDFs
File too large
Most portals cap PDFs at 100 KB to 2 MB. Phone scans are often 3–10 MB because every page is a full-size photo.
Password or edit lock
Portals cannot open protected PDFs. Print the file to a new PDF without a password before compressing.
Unreadable after compression
Very low resolution makes stamps, roll numbers and signatures blurry. Officials can reject documents they cannot read.
Wrong file type
Some forms want JPG for photos and PDF for documents. Do not rename a JPG to .pdf, convert it properly.
Embedded fonts and extras
Typed PDFs can carry heavy fonts, hidden layers and metadata. Standard compression removes the extras.
Which resolution (DPI) should you choose?
High compression picks the DPI for you, starting at 150 and stepping down only as far as your size limit needs. Use this table to choose a realistic limit for your document.
| Resolution | How it looks | Good for |
|---|---|---|
| 150 DPI | Clear text, stamps and signatures | Certificates, degree, caste/income certificate (500 KB – 1 MB) |
| 100–120 DPI | Readable on screen and when printed small | Marksheets, ID proof, 2–3 page documents (200 – 500 KB) |
| 72–90 DPI | Readable on screen, fine print gets soft | Single-page documents with a 100 KB limit |
| Below 72 DPI | Only large text stays readable | Last resort. Split the PDF or use grayscale first |
PDF compression questions
How do I compress a PDF to under 100 KB?
Upload the PDF, choose Max 100 KB and High compression, then press Compress PDF. For scanned marksheets also turn on Black & white. If it still does not fit, remove blank or extra pages and try again.
Will compressing the PDF reduce quality?
Standard compression does not change how pages look. High compression turns each page into an optimised image, so it can soften very small text. The tool always tries the best quality that fits your size limit first.
What is the difference between Standard and High compression?
Standard removes hidden data and re-saves the PDF efficiently, keeping text selectable. It works best for typed documents. High compression re-draws every page as a compressed image and works for scanned documents that need small KB limits.
Why do online application forms reject my PDF?
Usually because it is above the size limit, password protected, not readable, or not a real PDF. Compress it to the limit shown on the form, remove any password and check the file opens before uploading.
Is it safe to compress my marksheet or certificate here?
Yes. The PDF is processed inside your browser on your own device. It is never uploaded to ResultMonkey or any other server.
Can I compress a PDF on my mobile phone?
Yes. The compressor works in Chrome, Safari and other modern mobile browsers. For long PDFs on older phones, compress up to about 20 pages at a time.
Is there a page limit?
High compression works on up to 60 pages at a time so the browser does not run out of memory. Split bigger PDFs into parts first.