Tool category
Encoding & Security tools
Encode, decode, hash, sign, verify, and inspect security-related values without leaving the browser.
Tools
15
Featured tools
Good starting points in this category.
All Encoding & Security tools
Browse every tool currently available in this category.
Base64 Encoder / Decoder
Encode and decode Base64 online instantly. Free Base64 converter with no login.
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URL Encoder
Encode URL strings online
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Hash Generator
Generate MD5, SHA-1, or SHA-256 hashes online.
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JWT Decoder
Decode JWT header and payload instantly in your browser.
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JWT Encoder (HS256)
Generate signed JWT tokens using HS256 (HMAC SHA-256) directly in your browser.
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Password Generator
Generate strong random passwords instantly in your browser.
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HTML Entity Encoder / Decoder
Encode and decode HTML entities instantly in your browser.
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HMAC Generator
Generate HMAC-SHA-256, SHA-1, and SHA-512 signatures instantly in your browser.
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JWT Debugger
Analyze, validate, and edit JWT tokens online.
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Webhook Signature Verifier
Verify webhook signatures using HMAC and compare provided vs computed signatures.
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Bcrypt Hash Generator / Verifier
Generate bcrypt hashes and verify plaintext against a bcrypt hash.
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ASN.1 / DER / PEM Decoder
Decode PEM, DER, certificates, CSRs, and keys into readable summaries.
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X.509 Certificate Decoder
Decode X.509 certificates from PEM, Base64 DER, or hex DER. Inspect subject, issuer, SANs, validity, fingerprints, key usage, and certificate metadata.
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Certificate Chain Validator
Validate certificate chains, detect missing intermediates, check expiry, and inspect issuer relationships.
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CSR Decoder
Decode and inspect certificate signing requests online. View CSR subject, SAN, public key details, and DER/PEM formats.
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Other tool categories
Data & Format
Format, convert, validate, and inspect JSON, YAML, XML, SQL, and other structured data.
Generators & Validators
Generate and validate UUIDs, timestamps, cron expressions, and similar values.
Text & Content
Transform, compare, sort, count, and process text directly in the browser.
Network & Web
Parse URLs, inspect HTTP data, and check domain or network-related information.
Developer Misc
Useful extra tools for everyday development tasks.
SEO & Webmaster
Helpful technical SEO and webmaster tools for metadata, robots.txt, and sitemaps.
CSV & Data
View, filter, extract, and convert CSV and other table-like data.