How to compress a PDF to a specific size (100 KB, 200 KB, 500 KB or 1 MB)
Shrink a PDF under 20 KB, 50 KB, 100 KB, 200 KB, 500 KB, 1 MB or 2 MB for free. Which level to pick, what's realistic and what to do if it won't fit.
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PDFChai Blog
Guides, tips and plain-English explainers for getting things done with PDFs: compressing, converting, editing, signing and keeping your documents private.
Latest guides
What is PDF/A? PDF/A-1b vs 2b vs 3b explained, and how to convert to it
PDF/A is the archive version of PDF that courts, universities and portals ask for. Learn what 1b, 2b and 3b mean and convert a PDF to PDF/A for free.
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PDF too large to upload or email? 7 quick fixes that work
Portal says "file size exceeds the limit" or the email bounced? Seven quick, free ways to make a PDF small enough, from compression to splitting pages.
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How to split a PDF into separate files (the easy way)
Split a PDF for free: extract a page range, get one PDF per range, cut a file every few pages or save each page separately. Nothing is uploaded.
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How to scan documents to PDF with your phone (no app needed)
Scan documents to PDF with your phone for free, no app needed. Pages are cropped, straightened and cleaned up automatically, and nothing is uploaded.
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How to redact a PDF properly (so hidden text can't be recovered)
Redact a PDF the right way for free. Find and remove names, phone numbers, PAN, Aadhaar and card numbers, or draw boxes, so the hidden text is truly gone.
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How to password protect a PDF (and remove a password you know)
Password protect a PDF for free with AES-256, choose a strong password, share it safely and remove the password from your own PDFs. No upload.
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How to merge PDF files into one document (the easy way)
Merge PDF files into one document in seconds. Put files in the right order, keep forms working and fix locked or oversized files. Free and private.
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How to make a scanned PDF searchable with OCR (the easy way)
Make a scanned PDF searchable for free with OCR in 23 languages, including Hindi, Gujarati and Tamil. The pages look the same, but now you can search them.
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How to fill in a PDF form online and make a flat PDF fillable
Fill in PDF forms online for free, type on flat forms with no fields, and turn any flat PDF into a fillable form with Detect fields. Nothing is uploaded.
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How to edit a PDF online for free (the easy way)
Edit a PDF online for free. Change existing text, add new text, highlight, draw, sign, insert images and fix pages in your browser. Nothing is uploaded.
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How to convert a PDF to an editable Word document (the easy way)
Convert a PDF to an editable Word .docx for free in your browser. Keep headings and bold text, fix tables, handle scans with OCR and save it as a PDF again.
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