SlimIO makes your PDF smaller in seconds — without the blurry text. Free, fast, no install.
Three steps. No account, no install.
Drag a file in, or click to browse. You can pick how strong the compression should be.
SlimIO re-encodes the document to remove dead weight — in your browser or on a fast server.
Get your smaller PDF instantly. See exactly how much you saved before you click.
Your files stay yours.
Everything runs in your browser. Free, no signup.
Combine multiple PDFs into one
Extract pages or split by range
Convert pages to images
Turn images into a PDF
Receipts on A4 pages, under a size limit
Delete pages from a PDF
Reorder, rotate or delete pages
Number every page of a PDF
Stamp text on every page
Draw, type or upload a signature
Remove a password you know
Shrink JPG and PNG photos to any size
iPhone photos as JPG, many at once
Crop to passport or ID size, under the KB limit
600×600 for the DS-160, under 240KB
Clean JPG or PNG signature, 10–20KB
Need an exact size? Compress PDF to 50KB · 100KB · 200KB · 300KB · 500KB · 1MB · 2MB · for email
Size rules for application forms, with the official numbers and how to meet them.
No sign-up and no watermark. Open a tool and use it.