DevsTool
31+ fast, privacy-first utilities for developers and DevOps engineers — all client-side, no data leaves your browser.
31 tools
JSON Formatter
Format, validate, and minify JSON data
JWT Decoder
Inspect JSON Web Tokens and check expiry
Base64 Encoder
Encode and decode Base64 strings safely
Diff Checker
Compare two texts line, word, or char-level
Markdown Preview
Write and preview Markdown with GFM support
Hash Generator
MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes
JSON ↔ YAML
Convert between JSON and YAML with auto-detect
URL Encoder
Safely encode and decode URL parameters
UUID Generator
Generate and validate RFC-4122 UUIDs
Timestamp Converter
Convert Unix timestamps to readable dates
HTML Viewer
Live HTML preview with device-width simulation
GitHub Actions
Generate GitHub Actions workflow YAML visually
GitLab CI
Generate GitLab CI/CD pipeline YAML visually
K8s Generator
Generate Deployment, Service, Ingress, HPA YAML
Helm Chart Generator
Generate Chart.yaml, values.yaml, and templates
Terraform tfvars
Generate .tfvars files from a variable form
Dockerfile Linter
Lint Dockerfiles against 12 best-practice rules
YAML Validator
Lint and format Kubernetes and CI configs
AWS ARN Parser
Parse and validate AWS ARN strings into components
Cloud Storage URL
Parse S3, GCS, and Azure Blob Storage URLs
CIDR Calculator
Subnet mask, host range, broadcast from CIDR
SSL Decoder
Inspect SSL/TLS certs — SANs, expiry, fingerprints
HTTP Headers
Inspect response headers and security posture
Port Reference
Look up well-known TCP/UDP port numbers
PromQL Builder
Build Prometheus queries visually with aggregations
Regex Log Parser
Test regex against log lines, extract named groups
Log Formatter
Format JSON logs and filter by severity level
Secret Scanner
Detect AWS, GCP, GitHub, Azure credentials in text
ENV Parser
Parse and validate .env files, export to JSON
Cron Builder
Build and understand cron expressions
Git Command Builder
Build complex git commands with a visual UI