Compare two PDFs
AI semantic diff (vs Draftable/Diffchecker char-level 80% false positives) + side-by-side redlining for FRCP Rule 26(a), M&A, FAR Part 15. Beats Adobe Pro $19.…
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Drop the original and the new version side by side.
AI compares pages
Our AI finds every text and visual difference, even layout shifts.
Review and export
Side-by-side view with diffs highlighted in red. Export the report as PDF.
Why choose iFillPDF
Side-by-side view
Differences highlighted in red, identical content in gray.
Semantic diff
AI ignores formatting noise (extra spaces, line breaks, font kerning, page-margin shifts) and surfaces only meaningful changes — typically 5-15 real diffs per 50-page contract vs 200-500 false positives Diffchecker / Draftable /…
Image diff
Spots image swaps and crops, not just text.
EU-hosted, GDPR
Your files are stored in Frankfurt (EU), AES-256 at rest.
Spot every difference between two PDF versions — edited text, swapped images, layout shifts, signature blocks moved — with side-by-side redlining and AI semantic diff that ignores reformatting noise (extra spaces, line wraps, font kerning) where Draftable + Diffchecker char-level produce 80% false positives. Built for legal teams reviewing FRCP Rule 26(a) disclosures, M&A redlines, FAR Part 15 contract revisions, ICO UK GDPR audit trails. No Adobe Acrobat Pro $19.99/mo paywall (SERP-1, -4, -5), no Diffchecker $19/mo Pro, no Draftable $129/yr.
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E-signature proof log, business templates, no watermark. $8.99, one payment, for life — no subscription.
Frequently asked questions
Is it really free?+
Yes — the free plan gives you everything with a watermark and 0 AI Deep Detect, then $8.99/mo Start removes the watermark and adds 8 AI Deep Detect/mo. No credit card required for the free plan.
Is my data safe?+
Yes — we host in Frankfurt (EU), AES-256 at rest. GDPR-compliant, never used to train third-party AI.
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