# Observer vs SignValid: which to pick

> Observer vs SignValid: pricing, platforms, launches, upvotes and founders side by side on ProductsFarm, with notes on which to pick.

Canonical: https://productsfarm.com/compare/observer-vs-signvalid
Last updated: 2026-11-04

|  | [Observer](https://productsfarm.com/product/observer) | [SignValid](https://productsfarm.com/product/signvalid) |
| --- | --- | --- |
| What it is | Offline code audit reports for developers, consultants and security-conscious | Checks digital signatures on Indian government PDFs against India's CCA root |
| Pricing | Freemium | Free |
| Platforms | Web, CLI | Web |
| Categories | Developer tools, Security and privacy | Productivity, Security and privacy, Consumer apps |
| Made for | developers, consultants, agencies | citizens, government offices, verifiers |
| Built with | [GitHub Pages](https://productsfarm.com/tech-stack/github-pages), [Fastly](https://productsfarm.com/tech-stack/fastly), [Gumroad](https://productsfarm.com/tech-stack/gumroad) | [Vue](https://productsfarm.com/tech-stack/vue), [Cloudflare](https://productsfarm.com/tech-stack/cloudflare) |
| Upvotes | 12 | 0 |
| Website | [sanks205.github.io](https://sanks205.github.io/getobserver/) | [signvalid.in](https://www.signvalid.in/) |

## About Observer

Observer is a local code audit tool that scans a codebase and produces a production-health report covering security, code quality, dependencies, runtime errors and logs. It runs from the command line in one step, for example by pointing it at a project folder and writing an HTML report. The site states that source code stays on the user's computer and that no account, server or source-code upload is required for the default offline mode.

The tool combines several kinds of checks in one report. It identifies languages, frameworks, databases and infrastructure, and runs static analysis to flag secrets, injection risks, unsafe configuration and risky patterns. Rule-based guidance explains the context and impact of each finding and suggests possible remediation. An optional local agent can capture and group application errors, and log analysis reviews repeated failures and likely causes from existing logs. Reports can be exported as HTML, JSON, CSV, SARIF and printable formats, and teams can use baselines, quality gates and GitHub Actions in their pipeline.

Observer is aimed at developers, consultants, agencies and teams who need private audits of client or legacy code. The Community Edition is free and open source and includes offline CLI auditing, built-in rules, a local dashboard and a watermark on reports. Observer Pro is a paid all-access annual subscription, listed at $89 per year, that adds native PDF reports, scheduled scans and other professional features.

## About SignValid

SignValid is a free web tool that checks the digital signature on Indian government PDFs against the trust hierarchy of India's Controller of Certifying Authorities. It accepts e-Aadhaar, e-District certificates, DigiLocker documents and PAN e-cards, and can validate several files in one run.

For each file it reports the document type, the signer and the chain of certificate authorities up to the CCA India 2022 root. It runs five checks covering file integrity, signature coverage, the issuer chain, changes made after signing and revocation status, and it notes when revocation cannot be confirmed. When every check passes, it produces a verified display copy with a green tick that is visible in any viewer or on a printout. When a check fails, it gives a report and no tick.

The tool is aimed at people who need to confirm an Indian government document and at offices that receive signed PDFs and see Adobe Reader show an unknown validity status. Files are processed in memory and not stored, and the site states that it is an independent tool not affiliated with any government body.

## Related

- [Observer](https://productsfarm.com/product/observer)
- [SignValid](https://productsfarm.com/product/signvalid)
- [More comparisons](https://productsfarm.com/compare)