# PDF Signature Verify Verify digital signatures in PDF documents > Canonical page: https://elysiatools.com/en/tools/pdf-signature-verify - **Category:** PDF Tools - **Keywords:** pdf, signature, verify, digital signature, certificate, authentication ## Overview Check authenticity, integrity, and certificate chain of digitally signed PDFs. ## Inputs - **PDF File** (file) - **Show Certificate Details** (checkbox) - **Show PEM Certificate** (checkbox) ## When to use - When you receive a signed contract or legal agreement and need to confirm the signer's identity. - When you want to verify that a PDF document has not been tampered with or modified after being digitally signed. - When you need to inspect the certificate chain or extract the PEM certificate details of a signed PDF. ## How it works - Upload the digitally signed PDF document using the file input. - Choose whether to display detailed certificate information and the raw PEM certificate data. - Run the tool to generate a comprehensive HTML verification report showing signature status and certificate details. ## Use cases - Auditing digital contracts to ensure signatures are legally binding and authentic. - Verifying official academic transcripts or certificates issued as signed PDFs. - Inspecting cryptographic certificate details and PEM data for compliance and security audits. ## Frequently asked questions ### What does this tool verify in a signed PDF? It checks the validity of the digital signature, verifies document integrity to ensure no changes were made, and inspects the certificate chain. ### Can I view the raw PEM certificate data? Yes, by enabling the 'Show PEM Certificate' option, the tool will include the raw PEM data in the verification report. ### Does this tool support files other than PDF? No, this tool only supports PDF documents. ### How do I know if a document was modified after signing? The verification report will explicitly state if the document integrity has been compromised or if modifications were detected. ### Is my PDF uploaded securely for verification? Yes, your file is processed securely to extract signature metadata and verify the certificate chain. ## Related tools - [PDF Digital Signature PAdES and Trust Chain Validator](https://elysiatools.com/en/tools/pdf-digital-signature-pades-and-trust-chain-validator): Audit PDF signatures, PAdES baseline evidence, certificate chains, DSS, revocation material and timestamps offline. - [PDF PAdES Certificate Signer](https://elysiatools.com/en/tools/pdf-pades-certificate-signer): Sign PDFs with a PKCS#12 certificate using an ETSI CAdES detached signature. - [Formula / Chart Heavy PDF Analyzer](https://elysiatools.com/en/tools/formula-chart-heavy-pdf-analyzer): Compare local and hybrid OpenDataLoader extraction to identify PDF pages where formulas, charts, or dense visuals may need AI-assisted parsing - [PDF Usage Tracking ID Reader](https://elysiatools.com/en/tools/pdf-usage-tracking-id-reader): Extract embedded tracking ID and page serial values from tracked PDF files - [PDF Extract Selected Pages](https://elysiatools.com/en/tools/pdf-extract-selected-pages): Extract selected pages from one PDF and generate a new PDF - [PDF Form Data Export](https://elysiatools.com/en/tools/pdf-form-data-export): Read AcroForm field names, types and current values from a PDF and export them to JSON - [Convert GIF to PDF](https://elysiatools.com/en/tools/gif-to-pdf): Convert GIF images to PDF format with support for both single-frame and multi-frame animations - [PDF Photo Contact Sheet](https://elysiatools.com/en/tools/pdf-photo-contact-sheet): Generate paginated photo contact sheets with thumbnails, filenames, and EXIF lines ## Samples - [PDF Samples](https://elysiatools.com/en/samples/pdf-samples): Generated PDF samples from tools dated 2026-02-01 to 2026-02-10 - [Markdown Slide Deck Samples](https://elysiatools.com/en/samples/md-slide-deck-to-pdf): Remark/Marp style Markdown slide decks for testing PDF export layouts - [Time Zone Workflow Scheduler ICS Samples](https://elysiatools.com/en/samples/time-zone-workflow-scheduler-ics-samples): ICS files generated in the same structure returned by the Time Zone Workflow Scheduler, with multiple VEVENT meeting candidates exported from overlap windows - [ASS Subtitle Samples](https://elysiatools.com/en/samples/ass-samples): Sample ASS subtitle files from simple to complex for style-aware subtitle parsing, translation, conversion, and localization QA ## Related content - [PDF Forms, Navigation, and Review Workflow Tools](https://elysiatools.com/en/hubs/pdf-forms-navigation-review-workflows): Compare focused PDF tools for filling forms, adding navigation, marking up review notes, and verifying signed documents from one workflow hub. - [PDF Archival, Accessibility, and Trust Review Tools](https://elysiatools.com/en/hubs/pdf-archival-accessibility-trust): Clean scan noise, add OCR, convert to PDF/A, check PDF/UA-style accessibility signals, build bookmarks, and verify signatures in one focused hub for archive-ready PDF handoffs. - [Key Generation, Signatures, and Trust Verification Tools](https://elysiatools.com/en/hubs/key-generation-signature-verification): Generate key material, inspect JWT and AGEX signatures, verify PDF and TLS certificates, and compare hashes in one focused trust-checking hub. - [Document OCR and Structured Extraction Tools](https://elysiatools.com/en/hubs/document-ocr-extraction): Extract text, Markdown, JSON, tables, captions, and RAG-ready chunks from scanned PDFs and document images with OCR and structure-aware workflows.