Blog
Guides and explainers for developers and DevOps engineers.
Base64 Decode Corrupted Strings – Recover Payloads from Logs
Learn how to recover Base64-encoded payloads from audit logs when copy-paste strips padding. A Base64 decoder that flags padding and alphabet issues reconstructs the original data.
EncodingBase64 Encode and Decode – What It Is and How to Use It
What Base64 is, why it exists, how it differs from encryption, and where you encounter it daily — Kubernetes secrets, HTTP Basic Auth, JWTs, and data URIs.
EncodingBase64 Encode Images as Data URIs – Embed Assets Without Hosting
Learn how to Base64-encode images and files as data URIs for HTML embedding. Inline small icons and SVGs without a separate hosting dependency. Free browser-based Base64 encoder.
EncodingBase64 URL-Safe Encoder – Ship Query-Safe Tokens
Learn how to encode data using URL-safe Base64 so tokens and payloads survive query strings, HTTP headers, and proxies without transformation. Free browser-based encoder.
EncodingBulk UUID Generator – Generate Hundreds of UUIDs for Test Fixtures
Learn how to generate batches of UUIDs for database seeding, test fixtures, and mock data. Covers UUID v4 and v7, output formats, and collision probability at scale.
Developer ToolsHEX ↔ RGB ↔ HSL Color Converter
Convert colors between HEX, RGB, and HSL, build palettes, and ensure accessible contrast. Includes CSS snippets and WCAG guidance.
Developer ToolsCompare API Responses Online – Debug Breaking Changes Between Versions
Learn how to compare REST API responses to find breaking changes, regressions, and contract violations. Covers JSON normalization, dynamic field handling, and API versioning workflows.
Developer ToolsCron Daylight Savings Fixer – Prevent Duplicate and Missing Job Runs
Learn how to fix cron jobs that fire twice or not at all during DST changes. Build UTC-based expressions or simulate schedules through DST boundaries to catch gaps before they happen.
DevOpsCron Expression Examples – Complete Guide for Developers
A practical reference for cron expressions with common examples, field breakdown, and mistakes to avoid — for Unix cron, GitHub Actions, Kubernetes CronJobs, and AWS EventBridge.
DevOpsCron Expression UTC Builder – Coordinate Global Job Schedules
Learn how to build cron expressions in UTC so scheduled jobs run at consistent absolute times across multi-region clusters without drifting due to daylight saving changes.
DevOpsCron Generator Weekday Schedule – Keep Finance Jobs Off Weekends
Learn how to generate cron expressions that run only on weekdays. Prevent background jobs from accidentally firing on weekends and misaligning with business-hour data.
DevOpsCompare Text Online – Diff Checker Tool Guide
Learn how to use an online diff checker to compare two text blocks, spot code changes, and catch config mismatches — with line-by-line highlighting and practical examples.
Developer ToolsDocker Compose Validator – Fix YAML Before Deploy
Learn how to lint docker-compose.yml files, avoid indentation errors, confirm restart policies, and keep service configs portable across machines.
DevOps.env File Editor – Keep Environment Variables Consistent
Standardize .env files across dev, staging, and production. Learn how to sort keys, deduplicate secrets, and avoid missing variables.
Developer ToolsGitHub Actions Linter — Catch Broken Workflows Before They Break CI
Paste any workflow YAML and get instant feedback on triggers, jobs, runs-on labels, unsafe secrets usage, and deprecated actions before shipping to main.
DevOpsHash Generator Online – MD5, SHA256 Tool Guide
Learn how cryptographic hash functions work, when to use MD5 vs SHA-256, and how to generate and verify hashes instantly in your browser — no install required.
SecurityHMAC SHA-256 Generator – Sign and Verify Webhook Payloads
Learn how HMAC-SHA256 signatures work, how to generate and verify them for webhook security, and why HMAC provides authenticity guarantees that plain SHA-256 cannot.
SecurityIP Lookup Tool – Find Location, ISP, ASN
Investigate IPv4 and IPv6 addresses from audit logs. Learn how to retrieve geolocation, ASN, ISP, and reverse DNS without leaving your browser.
Developer ToolsJSON Diff Checker Online – Spot API Response Changes in Seconds
Learn how to compare two JSON objects and find added, removed, and changed fields. Covers key ordering, nested object diffs, and API regression testing workflows.
JSONHow to Format JSON Online – Beautify and Validate JSON Easily
Learn how to format JSON online — beautify for readability, minify for production, and catch syntax errors instantly. Free browser-based JSON formatter, no signup.
JSONJSON Formatter Pretty Print – Debug Webhook Payloads Faster
Learn how to pretty print JSON to debug webhook payloads from Stripe, Shopify, and internal emitters. Spot nested field differences instantly with a browser-based JSON formatter.
JSONJSON Lint Tool for APIs – Stabilize Automated API Tests
Learn how to lint JSON fixtures to catch invisible characters, stray BOMs, and invalid escapes before they cause non-deterministic API test failures. Free browser-based JSON linter.
JSONJSON Minifier for Payloads – Reduce Log Shipping Costs
Use a JSON minifier to strip whitespace from payloads before log ingestion. Stay under ingestion quotas without changing your data. Free browser-based JSON minifier, no signup.
JSONJSON Schema Validator Online – Enforce API Contracts Before Deployment
Use a JSON schema validator online to catch schema violations in partner API payloads before they reach production. Paste a payload, see which property violates the definition. Free, no signup.
JSONJSON to YAML for Ansible Playbooks – Migrate Config Without Rewriting
Learn how to convert JSON task definitions and variable files to Ansible YAML playbooks. Covers boolean handling, nested vars blocks, and the Ansible-specific YAML patterns.
YAMLJSON to YAML Converter Online – Transform Data Easily
Learn how to convert JSON to YAML and YAML to JSON instantly in your browser — with side-by-side examples, common conversion pitfalls, and when to use each format.
YAMLJSON to YAML for Kubernetes – Convert kubectl Output to Manifests
Learn how to convert kubectl JSON output to YAML manifests for version control. Covers field cleanup, multi-resource files, and Helm values file patterns.
YAMLJSON Validator – Catch Missing Commas and Syntax Errors
Use a JSON validator to find missing commas, trailing commas, and other punctuation errors before merging config files or fixtures. Get the exact line and character position of every error.
JSONJWT Audience Claim Validator – Lock Down Resource Access
Learn how to validate the JWT aud claim to prevent tokens from being accepted by unintended services. Decode and inspect audience claims without exposing private keys.
SecurityJWT Decode Header and Payload – Inspect Tokens During Incident Response
Learn how to decode JWT headers and payloads to inspect claims during incident response and auth debugging. No private key required — just paste and decode.
SecurityJWT Expired Token Troubleshooting – Fix Clock Skew Outages
Learn how to troubleshoot JWT expiry failures caused by clock skew. Decode exp and nbf claims to measure server time drift and set the right tolerance in your validation logic.
SecurityJWT KID Header Debugging – Resolve Key Rotation Failures
Learn how to debug JWT kid header mismatches after a signing key rotation. Inspect the kid value in the token header and match it to the correct key in your JWKS endpoint.
SecurityJWT Token Explained – Decode, Validate and Understand JWT Easily
A practical breakdown of JSON Web Tokens — header, payload, signature, expiry claims, and how to inspect them safely without a backend.
SecurityJWT Verify Signature Online – Confirm Issuers Before Trusting Tokens
Learn how to verify a JWT signature online using the token's kid header and the issuer's JWKS endpoint. Confirm the signing authority without exposing private keys.
SecurityMD5 vs SHA-256 vs SHA-512 – Choosing the Right Hash Algorithm
Compare MD5, SHA-1, SHA-256, and SHA-512 by speed, output length, collision resistance, and use case. Learn when MD5 is acceptable and when only SHA-256 or stronger will do.
Developer ToolsPrompt Token Counter — See Exactly What GPT and Claude Will Charge You
Paste your prompt once and get live GPT-6, GPT-5.6, Claude, and Gemini token counts plus current API pricing estimates — all client-side.
AI ToolsRegex Tester Email Validation – Reduce False Positives in Signup Forms
Learn how to test and refine email validation regex patterns interactively. Catch false positives rejecting plus aliases and new TLDs before the pattern ships to production.
Developer ToolsRegex Tester Lookahead Debugging – Fix Competing Assertions
Learn how to debug regex lookahead failures when competing assertions prevent the engine from reaching the capture group. Test patterns interactively with live match visualization.
Developer ToolsRegex Tester Multiline Logs – Extract Stack Traces Accurately
Learn how to write and test regex patterns for multiline log parsing. Handle stack traces and wrapped error messages with the correct flags and anchors in a live tester.
Developer ToolsRegex Tester Online – Test & Debug Regular Expressions Easily
Learn how to write and debug regular expressions with a live regex tester. Covers \\d+, email patterns, named groups, flags, and the most common regex mistakes.
Developer ToolsSHA-256 File Checksum – Verify Downloads Are Untampered
Learn how to verify file integrity using SHA-256 checksums. Confirm that downloaded binaries, packages, and artifacts match their published hashes before running them.
Developer ToolsTerraform vs Bicep Converter – Translate Azure IaC Faster
Learn how Terraform and Azure Bicep differ, how to convert resources between them, and which gotchas to watch for when migrating Infrastructure-as-Code.
DevOpsTimestamp Converter Epoch to ISO 8601 – Align Analytics and CRM Events
Learn how to convert Unix epoch timestamps to ISO 8601 format so product analytics and CRM data align on a common timeline. Free browser-based timestamp converter.
Developer ToolsTimestamp Converter Milliseconds to Seconds – Normalize Mixed Metrics
Learn how to convert epoch milliseconds to seconds when one service emits ms and another expects seconds. Fix the 1000x spikes that appear in dashboards when units are mixed.
Developer ToolsUnix Timestamp Converter – Epoch to Date Tool
Learn what Unix timestamps are, how to convert epoch time to a human-readable date, and how to debug timestamp issues in logs, APIs, and JWT tokens — with instant browser tools.
Developer ToolsTimestamp Converter Timezone Drift – Reconcile Regional Incident Timelines
Learn how to convert timestamps across timezones so distributed teams agree on event order during incident response. Eliminate debate caused by regional dashboard screenshots.
Developer ToolsTLS Certificate Decoder — Read Any PEM Cert in Your Browser
Paste any PEM certificate (or raw base64) and instantly inspect issuer, SANs, fingerprints, and expiry timelines entirely client-side.
SecurityULID vs UUID – Choosing the Right Sortable ID Format
Compare ULID, UUID v4, and UUID v7 for database primary keys and distributed IDs. Understand sortability, encoding, size, and library support to choose the right format.
Developer ToolsURL Decode UTF-8 Characters – Read Non-Latin Text in Logs
Learn how to URL-decode percent-encoded UTF-8 sequences so customer names and international text in logs become readable. Free browser-based URL decoder.
EncodingURL Encode & Decode Online – Fix Encoding Issues
Learn how to URL encode and decode query parameters, fix broken links, and understand percent-encoding — with practical examples of %20, %3A, and common encoding mistakes.
EncodingURL Encode Query Parameters – Keep SSO Callbacks Intact
Learn how to URL-encode query parameters so spaces, ampersands, and special characters in redirect URLs survive SSO callbacks and OAuth flows. Free browser-based encoder.
EncodingURL Encode Reserved Characters – Protect Webhooks from Injection
Learn how to percent-encode reserved characters like # and & so webhook payloads survive routing through gateways and proxies without being truncated or misparsed.
EncodingUUID Generator Online – Create Unique IDs Instantly
Learn what UUIDs are, the difference between v1, v4, and v7, when to use them over auto-increment IDs, and how to generate cryptographically random UUIDs instantly in your browser.
Developer ToolsUUID v4 vs UUID v7 – Which Version to Use for Database Keys
Learn the difference between UUID v4 and UUID v7. Understand why v7's time-ordered format improves database index performance and when v4's random structure is still the right choice.
Developer ToolsWhat Is My IP Address? Find Your Public IP Instantly
Instantly find your public IPv4 or IPv6 address, ISP, location, and timezone. Learn what your IP reveals, how to check it, and how to hide it. Free browser tool.
Developer ToolsYAML Diff Online – Catch Config Drift Before Deployment
Learn how to diff two YAML files to detect configuration drift between environments. Compare Kubernetes manifests, Helm values, and CI configs before deploying.
YAMLYAML Linter for GitHub Actions – Avoid Broken Automation
Learn how to lint GitHub Actions workflow YAML before pushing. Catch missing quotes, boolean coercion, and indentation errors that break automation silently or loudly.
YAMLYAML Linter for Kubernetes Manifests – Catch Errors Before kubectl Apply
Learn how to lint Kubernetes manifests before applying them. Catch tab characters, indentation drift, and missing colons with exact line numbers before the cluster ever sees them.
YAMLYAML Syntax Checker for CI Pipelines – Keep Definitions Reliable
Learn how to catch YAML syntax errors in GitHub Actions, GitLab CI, and Jenkins pipelines before they stop all builds. A YAML syntax checker flags showstoppers during authoring, not at runtime.
YAMLYAML to JSON Converter Online – Reverse Config for APIs
Learn how to convert YAML to JSON instantly in your browser. Covers YAML anchors, multi-document files, type coercion, and when to convert for API payloads and tooling.
YAMLYAML Validator for Helm Charts – Ship Reproducible Releases
Learn how to validate Helm chart YAML before installing. Catch indentation drift, anchor expansion issues, and tab characters in rendered manifests before they reach your cluster.
YAMLYAML Validator Indentation Fix – Stabilize Kubernetes Rollouts
Learn how to fix YAML indentation errors in Kubernetes ConfigMaps and Helm charts. A YAML validator pinpoints the exact row so you can repair it without guessing.
YAMLYAML Validator Online – Fix Syntax Errors and Format YAML Easily
Learn how to use a YAML validator online to catch indentation errors, tab characters, and formatting issues in Kubernetes, GitHub Actions, and Docker Compose files.
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