Compress PDF to 1 MB
Get your PDF under 1 MB for certificates, documents and job applications. Free and private.
- Free, no sign-up
- Files never uploaded
- No watermark
- No limits
Your PDF is processed in your browser and is never uploaded.
How to compress a PDF to 1 MB
- Tap Choose a PDF and pick your file. The target is already set to 1 MB.
- Wait a few seconds while DocSlim finds the best quality that fits.
- Tap Download PDF and upload it to your form.
Where 1 MB PDF limits are common
Many job, college and application portals limit uploaded documents like degree certificates and mark sheets to 1 MB. Scanned PDFs from a phone or office scanner are often 3 to 10 MB, so they get rejected.
Quality at 1 MB
1 MB is enough for several clear pages. DocSlim keeps each page at up to about 150 DPI and only lowers the quality as much as it has to, so text and photos stay readable.
Frequently asked questions
Is 1 MB counted as 1000 KB or 1024 KB?
DocSlim uses 1000 KB, the smaller number, so the file passes on portals that use either.
My PDF has many pages. Will it fit in 1 MB?
Usually yes, up to around 10 to 20 pages of text. Turn on Black and white for text documents to save more space.
Are my files uploaded to a server?
No. The PDF is made inside your browser on your own device. Your files are never uploaded, stored or seen by anyone.
Is this tool free?
Yes. It's completely free, with no sign-up, no watermark and no limit on how many PDFs you make.