PDF-Komprimierer — Kostenloses Online-Tool
PDFs verlustfrei bereinigen und verschlanken, ohne Bilder neu zu komprimieren (Scans schrumpfen kaum)
Verlustfreie PDF-Bereinigung im Browser: entfernt Metadaten und packt Objekte neu, ohne Bilder neu zu komprimieren – Scans und Foto-PDFs werden deshalb kaum kleiner. Kostenlos, ohne Upload.
📚 Mehr erfahren
Free PDF compressor — shrink file size in your browser
Toololis PDF Compressor reduces PDF file size by stripping metadata and optimizing the PDF object structure. Fast, private, and browser-based. Best for shrinking PDFs for email attachments, cloud storage, or web upload limits.
How to use this tool
- 1
Upload a PDF
Drop your PDF or tap to browse. File size appears once loaded.
- 2
Click Compress
The tool strips metadata, unused objects, and optimizes compression streams. Works best on PDFs with bloated metadata or unoptimized structure; scanned or photo PDFs may barely shrink.
- 3
Compare before and after
The result shows original vs compressed size. Download if the savings are meaningful.
What this tool does
- Removes metadata — Author, creation tool, edit history, timestamps
- Removes unused objects — Orphaned resources, duplicate font subsets
- Optimizes object streams — More compact PDF syntax
- Preserves visual content — Nein image recompression, no quality loss
What this tool doesn\'t do
- Resample / recompress embedded images (desktop tools do this)
- Convert color → grayscale
- Downsample fonts
For those, use Adobe Acrobat Pro, Ghostscript, or a dedicated online service.
Frequently Asked Questions
How much compression can I expect?
Why is browser-based PDF compression limited?
Will compression affect quality?
Are my PDFs uploaded?
What if the file gets bigger after compressing?
pdf-lib's output might be slightly larger due to different object ordering. The tool warns you and you can keep the original.For bigger savings, what should I do?
Wichtigste Punkte
- PDF Compressor is a free, browser-based pdf tool — clean up and slim down pdfs without recompressing images (scans may barely shrink).
- Nein signup, no downloads, no file uploads. Tools run in your browser; the few that need an outside service say so on the page.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use PDF Compressor
- Open the tool: Launch PDF Compressor on Toololis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
PDF Compressor — Quick Facts
- Preis
- Kostenlos — keine Limits, kein Wasserzeichen, keine Paywall
- Privatsphäre
- Wird im Browser verarbeitet. Tools, die einen externen Dienst brauchen, sagen das auf der Seite. Seitenaufrufe werden gezählt (Google Analytics).
- Plattform
- Jeder moderne Browser — Desktop, Tablet, Mobil
- Kategorie
- PDF Tools on Toololis
- Offline
- Works offline after first visit (Progressive Web App)
| Merkmal | Details |
|---|---|
| Tool | PDF Compressor |
| Kategorie | |
| Anmeldung nötig | Nein |
| Datei-Upload | Keine — wird im Browser verarbeitet |
| Mobile-Unterstützung | Voll responsive |
| Kosten | Für immer kostenlos |
Why Use PDF Compressor?
You should try PDF Compressor for a quick, private way to clean up and slim down pdfs without recompressing images (scans may barely shrink). Processing happens in your browser and files are never uploaded; the few tools that need an outside service say so on the page.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.