Compress PDF Online Free — Shrink File Size

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VitePDF
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OCR PDF text search

Scans every page (including scanned/image-only pages with no selectable text) so you can search for a word or phrase.

PDF to Word

Extracts the real text where the PDF has it, and runs OCR automatically on scanned/image-only pages. Works best for simple, single-column documents — complex layouts, tables, and multi-column text won't be preserved exactly.

PDF to PowerPoint

Each page becomes one slide, rendered as a full-page image — layout, fonts, and graphics come out exactly as they look in the PDF. Runs entirely in your browser.

PDF to Excel

Reconstructs rows and columns from the PDF’s own text spacing, and runs OCR automatically on scanned/image-only pages. Works best for simple, clearly-aligned tables — free-form text near a table may get split oddly.

Word to PDF
PowerPoint to PDF
Excel to PDF
PDF to JPG

Each page becomes a .jpg image. Runs entirely in your browser — nothing is uploaded. Multiple pages are zipped together for download.

JPG to PDF
HTML to PDF

PDF to HTML

Produces one self-contained .html file — an image of each page with an invisible text layer on top, so it looks exactly like the PDF but the text stays selectable, searchable (Ctrl/Cmd+F), and copyable. Runs entirely in your browser.

Unlock PDF
Password protect PDF
Sign a PDF
Redact content
Compress PDF
Fill PDF forms
Crop / resize pages
PDF to plain text
Compare two PDFs

Original PDF

Click to choose, or drop it here

Revised PDF

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Repair a PDF
Extract images from PDF
Edit PDF metadata
Read PDF aloud
Find & remove blank/duplicate pages
Combine pages for printing
Convert to grayscale
Bookmarks / table of contents

How to compress a PDF online

  1. Choose the PDF you want to shrink.
  2. VitePDF scans it and reports how many compressible images it found and their combined size.
  3. Pick a compression level — Smaller for maximum size reduction, Best quality to keep images looking as close to the original as possible.
  4. Click Compress PDF, then download the result — the before/after size is shown right there.

Why use VitePDF

  • Only the images are recompressed — your text and vector graphics are never touched, so the PDF stays fully searchable and sharp.
  • Images shared across multiple pages are only recompressed once, then reused, so nothing is wasted.
  • Everything happens in your browser — your PDF is never uploaded anywhere.

Got more than one PDF to shrink? Try Batch Compress — compress many files at once and download them all as a ZIP.

Frequently asked questions

Why didn't my PDF get much smaller?

Compression works on the JPEG images embedded in a PDF — a document that's mostly text, or one whose images are already well-compressed, has little left to shrink. VitePDF tells you up front how many compressible images it found.

Will this affect image quality?

Yes, to some degree — that's how compression makes a file smaller. Balanced keeps things looking close to the original for normal use; Smaller trades more visible quality for a smaller file; Best quality keeps images closest to the original at the cost of less size reduction.

Does this work on scanned PDFs?

If the scan was saved with JPEG-compressed pages (the most common case), yes. Some scanners save pages as other image formats that this version doesn't recompress yet.

Is there a file size limit?

Files up to 140 MB are free — Premium removes that limit entirely.