Optimize a PDF losslessly
Clean up bloated PDF internals without changing how anything looks. Ideal when quality must stay exactly the same.
or drop files here
PDF Up to 100 MB · 50 files Processed in your browser
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How to optimize a PDF
- Select one or more PDFs.
- Choose options: compress streams, generate object streams, remove unused objects and strip metadata.
- Click "Optimize PDF".
- Download the optimized file and compare sizes.
Why use TotoPDF Optimize PDF?
Truly lossless
Images and text are not re-encoded; only file structure is improved.
Object streams
Packs PDF objects together for a more compact file.
Remove clutter
Drop unused objects, thumbnails and optional metadata.
Browser-based
Runs locally with qpdf WebAssembly.
Frequently asked questions
Optimize never lowers image quality. Compress PDF can downsample images for much bigger savings.
Rewriting a file invalidates certified digital signatures. Avoid optimizing digitally signed PDFs.
Well-made PDFs are already efficient. Larger savings usually need image compression.
Yes, it removes document info such as author, title and creator tool.