
Online Text Compare
TextCompare
Text compare!
Diff Checker
Compare
Beyond Compare
TextCompare.io
Private, browser-based text, document & file comparison

Decode and verify SSL/TLS certificates online. Extract X.509 details including issuer, validity, SAN, and fingerprint. Fast, secure, and browser-based.
Which is more popular?
Based on our record, Cert Decoder seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | textcompareo.com | certdecoder.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from India · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


TextCompareo is a free browser-based comparison tool for text, PDF, Word, Excel, HTML, XML, CSV and RTF files, as well as entire folders and ZIP archives. Everything runs client-side — files are never uploaded or stored — which makes it usable for contracts, configs and private data. Word-level...
Cert Decoder is a free online tool that helps you decode X.509 SSL/TLS certificates in PEM format. It instantly shows important information like the issuer, expiry date, SAN entries, and fingerprint. All data is processed locally in your browser, so nothing is ever sent or stored elsewhere.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing TextCompareo and Cert Decoder.
TextCompareo's answer
TextCompareo started from a simple frustration: most online compare tools force you to upload your files to their servers — a real problem when those files contain contracts, private drafts, or confidential data.
We built TextCompareo to do the opposite: run everything in the browser, so your data never leaves your device. From there it grew into a full suite that compares text, documents, spreadsheets, and folders — fast, free, and private by default.
Cert Decoder's answer:
I built certdecoder.com over the weekend for my own needs. Sometimes in my work, I need to verify and check certificate details.
Cert Decoder's answer:
certdecoder.com was built using just JavaScript and HTML—simple, fast, and with all processing happening locally in your browser, so no certificate data is sent to any server
TextCompareo's answer
Developers, writers and editors, legal and compliance teams, data analysts, translators, students, and QA testers — anyone who needs to spot exactly what changed between two versions of a document, spreadsheet, webpage, or folder without risking their data on a server.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
TextCompareo's answer
Cert Decoder's answer:
Simple, fast, and reliable. Some similar tools can’t even decode basic certificates. I rigorously tested my tool with many real-world certificates and covered several edge cases where competitors fall short.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
TextCompareo's answer
TextCompareo runs 100% inside your browser — your files are never uploaded to any server. Most comparison tools send your data to the cloud, but TextCompareo does all the parsing and diffing locally, so even sensitive documents stay completely private.
It's also multi-format in one place — compare not just plain text, but PDFs, Word docs, Excel sheets, CSV, HTML pages, and even entire folders. Its parser is framework-aware, so it can pull readable text out of modern JavaScript-heavy pages (Next.js, React, Nuxt.js) that other tools leave empty.
Share your experience with using TextCompareo and Cert Decoder. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking TextCompareo since Jul 2026.
Why? Because I built certdecoder.com and couldn’t find a decent place to submit it. So I said screw it — I’ll build my own. With blackjack and hookers. - Source: dev.to / over 1 year ago
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