Strumento Gratuito

Riduci le dimensioni del file di un PDF preservando la qualità — le immagini vengono ricampionate e i flussi ottimizzati, poi scarica istantaneamente.

Loading tool…

Come funziona

Comprimi il tuo PDF in tre passaggi

  1. 1

    Upload your PDF

    Drag and drop your PDF onto the tool or click to browse. The file loads directly in your browser — never sent to any server.

  2. 2

    Compression runs automatically

    mupdf (a professional PDF processing library compiled to WebAssembly) analyses and compresses the document — removing unused objects and recompressing images and fonts.

  3. 3

    Download the smaller PDF

    The tool shows the original size, compressed size, and percentage saved. Click 'Download compressed PDF' to save the result.

Perché usare Signvoy

Compressione reale, privacy reale

Powered by mupdf WASM

mupdf is the same engine used in professional PDF applications. It removes unused objects, recompresses fonts and images, achieving real file size reductions.

Instant results with size report

The tool shows you the original size, compressed size, and percentage saved before you download — so you know exactly what you're getting.

Your file never leaves your device

The entire compression runs locally in your browser using WebAssembly. Nothing is uploaded or stored anywhere.

Hai bisogno di inviare un documento ad altri per la firma?

Questo strumento gratuito copre il lavoro su documenti self-service in un solo passaggio. La piattaforma completa di Signvoy aggiunge tutto ciò di cui un'azienda ha bisogno: inviare a più firmatari, imporre un ordine di firma, ottenere una traccia di audit a prova di manomissione, automatizzare i promemoria e allegare un certificato di completamento a ogni documento finito.

  • Firma multi-parte
  • Traccia di audit a prova di manomissione
  • Certificato di completamento
  • Modelli di firma riutilizzabili
  • Instradamento sequenziale e parallelo
  • Promemoria automatici
  • API REST e webhook
  • Logica di campi condizionali

FAQ

Domande frequenti

How much can the tool reduce my PDF size?
Results vary. PDFs that contain many redundant objects, uncompressed streams, or high-resolution embedded images see the largest reductions (30–70%). PDFs already optimised by tools like Acrobat may see little or no reduction.
Does compression affect quality?
The tool uses mupdf's lossless compression passes (object removal and stream compression) by default. It does not downsample images, so visual quality is preserved.
Why did my file get larger after compression?
This can happen if the PDF was already maximally compressed and adding mupdf's compression headers adds a small overhead. The tool will still let you download the result.
Is there a file size limit?
The tool accepts PDFs up to 25 MB. Very large PDFs may take longer to process as the mupdf WASM module works through the document in your browser.

Smetti di rincorrere le firme

Unisciti a migliaia di team che usano Signvoy per chiudere accordi, acquisire clienti e firmare contratti — più velocemente.

Nessuna carta di credito · Piano gratuito per sempre · 14 giorni di prova Pro