Compress PDF to 1 MB free
Reduce your PDF to under 1 MB directly in your browser. Perfect for email attachments, web uploads, and easy sharing. No upload, 100% private.
Drop files or click to choose
100% local private compression. Files never leave your device.
How compressing a PDF to 1 MB works
- 100% private — runs in your browser. Compression runs with Ghostscript compiled to WebAssembly inside your browser tab. Your PDF never leaves your device: nothing is uploaded, stored or seen by anyone else.
- Presets, not a size slider. MiniFiles doesn't aim for an exact file size. It recompresses the images in the PDF at a fixed resolution and shows you the new size before you download, so you can check it fits under 1 MB.
- Free and Pro presets. Free use applies Balanced (images at 150 DPI). Pro adds Maximum (72 DPI, the smallest files), High Quality (300 DPI) and Lossless.
- What's realistic. Most text documents, invoices and forms end up well under 1 MB. Scanned pages and photos are what make a PDF heavy; the more of them there are, the harder 1 MB gets.
- Several PDFs at once. Drop multiple PDFs together and they're compressed in one go, each with its own before and after size, then downloaded one by one or all together.
- When it's still too big. Keep only the pages you need with Split PDF, then compress the smaller file. Text and vector graphics stay sharp at every preset; only images lose detail.
Too many pages? Split the PDF first.
Frequently asked questions
Can I compress a PDF to exactly 1 MB?
Not to an exact size. MiniFiles recompresses the images in your PDF with a preset and shows the new size before you download. Most text PDFs end up under 1 MB; long scans may need the Maximum preset (Pro) or fewer pages.
Will 1 MB compression affect PDF quality?
Text and vector graphics remain perfectly sharp. Images are intelligently recompressed to balance size and visual quality. The result is ideal for sharing via email and messaging.
Can I compress multiple PDFs to 1 MB at once?
Yes. Drop several PDFs into the box together and MiniFiles compresses them one after another in your browser, then lets you download each file or all of them at once. Without an account each file counts towards the free daily limit of 10; with a free account there's no limit.
Is my PDF uploaded to a server?
No. All compression happens locally in your browser. Your PDF never leaves your device.
Why compress PDF to 1 MB?
Many email providers have 1 MB attachment limits. Compressing to this size ensures your PDF can be sent without bouncing. It also reduces upload time for web forms and cloud storage.
Need a different size?
The general PDF compressor handles any PDF, with all presets on Pro.