Optimize PDF for Web — Fast-Loading Files
Shrink a PDF so it opens quickly on websites and phones by rebuilding every page as a screen-resolution image.
When people open your PDF from a link or on a phone, a smaller file loads faster. This tool reduces file size for documents that are meant to be viewed on screen — not printed, and not searched for text.
How to optimize a PDF for the web (3 steps)
- Open your PDF.
- Run web optimization.
- Download the faster-loading file.
Which files it suits
- Catalogs, menus, and brochures — posted on a website or sent as a link for customers to open on their phones.
- High-resolution scans — that need to open quickly and aren't going to be printed.
How it works
Every page is rebuilt as a JPG image at roughly 100 dpi, which is enough for reading on screen. Files containing photos or high-resolution scans usually get much smaller and load faster over mobile data. The tool shows the size before and after so you can compare.
Before you use it
- Text in the new file becomes part of an image. Readers can't search or copy it, and screen readers for visually impaired users can't read it.
- It isn't suited to printing, because the resolution is lower than typical print quality.
- Files that are already plain text may not get smaller — they can even grow. Check the size before using the result.
- To reduce size with a quality level you choose yourself, use Compress PDF.
FAQ
Why does the file get smaller?
Every page is rebuilt as a JPG image at about 100 dpi, which is enough for on-screen reading. Files with photos or high-resolution scans therefore shrink considerably.
What kind of files is it for?
Files posted on websites, e-books, and catalogs that people open from a link.
Can the text still be searched?
No, because every page becomes an image. If readers need to search or copy text, don't use this tool.
How is this different from Compress PDF?
Compress PDF lets you choose a quality level for your purpose. This tool uses a single preset designed for on-screen viewing, so there's nothing to choose.
Can I print the result?
You can, but it will be less sharp than the original. If you need to print, use the original file.