Reduce your PDF file size instantly without losing quality.
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Reduce your PDF file size without losing readability. Our PDF compressor uses professional-grade compression to shrink PDFs for email attachments, uploads, and sharing — while keeping your text and images intact.
Your files are processed on secure servers and automatically deleted within 1 hour. No signup, no watermarks, ever.
Click "Choose PDF" or drag and drop your file. Supports PDFs up to 100MB.
We'll process your file using professional compression. Usually takes 10–30 seconds.
Click the download button to save your smaller PDF. No watermarks added.
Yes, 100% free. No signup, no subscription, no hidden fees.
Text remains sharp. Images may be slightly compressed but remain readable and professional.
Typically 30–70% reduction depending on content. PDFs with many images compress the most.
Maximum 100MB per file.
Files are automatically deleted from our servers within 1 hour of processing.
Never. Your PDF is returned exactly as-is, just smaller.
Input: PDF (.pdf)
Output: Optimized PDF (.pdf)
Maximum file size: 100 MB per file. If your file is larger, compress or split it first using our other free tools, then return here.
Yes. FastConvertTools is free to use with no account required. We fund the site through advertising so you can convert files without a paywall.
Files are transferred over HTTPS to our conversion partner for processing and are typically deleted from their servers within about one hour. We do not use your documents to train models or build marketing lists.
PDF and video tools accept up to 100 MB per file per job unless the upload area states otherwise. Image and text tools may use browser limits instead of a fixed cap.
Any modern device with a current browser works. Phones and tablets can upload from the gallery or files app; desktops support drag-and-drop. Disable aggressive ad blockers only if they block the conversion script—never disable HTTPS.
Text and vector graphics usually stay sharp. Photos and scans may show mild compression artifacts if the source was already heavily compressed. Always spot-check pages with fine detail before sending to print.
Portable Document Format files bundle text, fonts, vector graphics, and embedded images into one shareable package. Compression targets bloated image streams and redundant objects rather than rewriting your words. Legal teams compress closing binders before e-filing, recruiters shrink portfolios for applicant tracking systems, and teachers reduce syllabus PDFs for students on metered mobile data. Scanned archives benefit most because each page is often a full-resolution bitmap. Digital exports from Word or InDesign may shrink less but still gain when high-DPI marketing photos were embedded carelessly. Compression is not a substitute for proper redaction or password protection—treat optimized copies as distribution versions while retaining a master if your policy requires it. When a portal still rejects the file, split appendices or lower scanner DPI at capture time, then compress again from a cleaner source.
FastConvertTools focuses on straightforward workflows: upload or paste, convert, download, and move on with your day. Whether you are a student fixing one assignment, a freelancer delivering client assets, or an office administrator unblocking an email attachment limit, you get clear steps on this page and predictable limits before you start. When results must be perfect, always keep an original copy and spot-check the output against your source—automated conversion saves time, but human review still wins for high-stakes documents.