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Reduce PDF size for forms, WhatsApp and email, or set an exact limit like 100KB or 200KB.
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Pages are saved as sharp images, so text stays easy to read and print, but cannot be selected or searched.
Open the PDF to check it before you upload. If it is not right, tap Change Settings and try again. Your PDF stays loaded.
Make a big PDF small enough for government portals, college admissions, job applications, WhatsApp and email. Choose a ready level or type the exact size limit your form asks for.
All compression happens in your browser. Your PDF is never uploaded to any server, so your documents stay private.
Exam, scholarship and admission portals usually set a maximum PDF size, often somewhere between 100 KB and 2 MB. A PDF made from phone photos or a scanner is often far bigger.
Choose Size limit and pick the exact limit from the form. The tool reduces quality only as much as needed and shows a clear Fits tick.
| Size limit | Scanned pages that stay readable |
|---|---|
| Under 100 KB | 1 to 2 pages |
| Under 200 KB | 2 to 4 pages |
| Under 500 KB | 5 to 10 pages |
| Under 1 MB | 10 to 20 pages |
WhatsApp accepts large documents, but a 10 MB PDF is slow to send and slow to open on mobile data. Choose Recommended to make it much smaller while keeping it easy to read.
Sending photos instead? Read how to compress a PDF for WhatsApp and why WhatsApp makes photos blurry.
Gmail allows attachments up to 25 MB, and many office email systems allow less. Compress the PDF so it attaches quickly and opens smoothly on the other person's phone.
| Option | What it does | Use it for |
|---|---|---|
| Recommended | 150 DPI, good quality | WhatsApp, email, printing |
| Strong | 100 DPI, smaller file | Screen viewing, quick sharing |
| Size limit | Finds the best quality that fits | Forms with a KB or MB limit |
A little. To make big savings, each page is saved as a sharp image. Text and photos stay clear on screen and in print, but you can no longer select, copy or search the text.
PDFs made of plain typed text are already small. If compressing would not help, the tool tells you and keeps your original file instead of making it worse.
Yes. The PDF is processed by your own browser and never leaves your device. Nothing is uploaded, stored or shared.
Have photos instead of a PDF? Use JPG to PDF with a size limit to make one PDF in a single step. Need separate photos under 50KB? Use the image compressor.
To join several PDFs, use the PDF merger. To turn pages into photos, use PDF to JPG.
Everything you need to know about this PDF compressor at a glance
Upload your PDF above, choose Recommended, Strong or a size limit, then tap Compress PDF for Free and download. It is free, with no signup and no watermark, and works on mobile.
Choose Size limit, then Under 100 KB or Under 200 KB. The tool lowers quality only as much as needed and shows a clear Fits tick. As a guide, under 100 KB suits 1 to 2 scanned pages and under 200 KB about 2 to 4.
Most portals ask for a PDF under a set size, often between 100 KB and 2 MB. Pick that limit in the tool. For scanned documents, also choose Black and white, which keeps text sharp at a much smaller size.
Choose Recommended. The PDF becomes much smaller, sends faster on slow mobile data and opens quickly on the other phone, while the text stays easy to read.
A little. The tool saves each page as a high-quality image, so text and photos stay sharp and readable when viewed or printed. The difference you will notice is that text can no longer be selected or searched.
PDFs made of plain typed text are already very small, so there is little to remove. When compressing would not help, the tool tells you and keeps your original file instead of making it worse.
No. To make big savings, each page is saved as an image. The text looks the same and prints fine, but you cannot copy or search it. Keep your original PDF if you need that.
No. Remove the password first, for example by opening the PDF and saving or printing it as a new PDF without a password, then compress that copy.
Yes, it is safe. Your PDF is compressed inside your browser and is never uploaded or stored anywhere. ToolsFlow cannot see your documents.
Up to 200 pages. Very large files depend on your device's memory, so a computer handles big PDFs better than an older phone.
Open this page in Chrome or Safari, tap Choose PDF File, pick the PDF from your files or Downloads, then tap Compress. The smaller PDF saves to your phone, with no app needed.
Yes, 100% free. No signup, no login, no watermark and no daily limit.