Drop PDF files here


Conversion Results:

Output File Original Size Output Size Size Compressed Actions


Try our PDF Tools app for Android to compress PDF files offline without file number and size limits.

  1. Settings

    Set image quality first. Image quality value can be 1 (lowest image quality and highest compression) to 100 (best quality but least effective compression). You can close "Settings" section by clicking the "X" on the right if you use default settings.

  2. Add Files

    Drag multiple PDF files to the "Add Files" section. Each PDF file size can be up to 40m.

  3. Compress Files

    The compressing automatically starts when files are uploaded. Please be patient while files are uploading or compressing.

  4. Output Files

    The output files will be listed in the "Conversion Results" section. To compress all output files in a ZIP file, click "" icon on the right, then click "Add to ZIP". You can right-click on file name and click "Save link as..." to save the file. The output files will be automatically deleted on our server in two hours, so please download it to your computer or save it to online storage services such as Google Drive or Dropbox as soon as possible.


Not just PDF, this super online compressor can also compress all kinds of other files include HTML, CSS, JAVASCRIPT, XML, JSON, WORD, JPG, PNG, GIF, SVG and WEBP etc. Click on "Choose File" zone and choose a folder on your computer, it will list all supported files in this folder for you to choose.

Sometimes output file size may not be reduced after compression, this is because the file may be compressed before or has lower quality than settings. For example, changing a PDF file's image quality to 60 will not reduce size of PDF file which original image quality is below 60. If this happens, try entering a smaller image quality value such as 20.