Read any PDF's metadata instantly — page count, size, author, creation date, encryption status. Verify a download before opening fully — local parsing, free, no signup.
Content reviewed October 2026 · About Toolzum
Edit PDF title, author, keywords, and document info — fix 'Untitled' exports before sharing. Brand 20 client deliverables correctly — local pdf-lib edit, unlimited saves.
Trims PDF file size by stripping redundant metadata and optimizing object streams — best on text-heavy documents. Cannot recompress embedded images (the main size driver); for scan-heavy PDFs use Bulk PDF Size Reducer. Handles PDFs up to 125MB.
Lock PDFs with user and owner passwords — control opening, printing, and copying. Protect 10 client files before sending — local pdf-lib encryption, unlimited saves.
Count word occurrences with percentages and top-N ranking — keyword density, essay analysis, content audits. Spot a 5% stuffing problem instantly — free, local, no signup.
Full photo editor in your browser: crop, rotate, flip, resize, tune brightness/contrast/saturation/warmth, auto-fix, annotate with text/shapes/draw/blur, HEIC input, shrink-to-target-size, metadata-strip toggle, and PNG/JPG/WebP export. Parametric undo, hold-to-compare — free, no signup, nothing uploads.
Page count, file size, dimensions, author, creator app, creation/modification dates, and encryption status — the full header in one glance.
Yes — encryption and permission flags report upfront (no-print, no-copy). Unlock first with the password before editing or converting.
Oversized page counts and producer anomalies flag malformed or malicious files. A 2-page invoice claiming 400 pages deserves suspicion, not a double-click.
No — header parsing runs locally in your browser. Nothing leaves your device and nothing is stored.
Compare PDF Files
Diff two PDFs side by side — spot changed clauses, figures, and pages before signing. Review a 20-page contract revision in minutes — local PDF.js comparison, free, no signup.
PDF Metadata Editor
Edit PDF title, author, keywords, and document info — fix 'Untitled' exports before sharing. Brand 20 client deliverables correctly — local pdf-lib edit, unlimited saves.