Free Developer & Security Tools
70+ tools, all running 100% in your browser. No data ever sent to servers. No sign-up required.
A – B
C
Certificate Decoder
Decode PEM certificates. View subject, issuer, dates.
Chmod Calculator
Interactive Unix permissions. Numeric ↔ symbolic, common presets, chmod command preview.
Code Screenshot
Generate beautiful code screenshots. Multiple themes, PNG download.
Color Picker & Converter
HEX, RGB, HSL, HSV, CMYK. Color harmonies, tints/shades, WCAG contrast checker.
Cron Expression Parser
Parse cron expressions to human-readable. Next 10 runs, common presets.
Crontab Generator
Build cron expressions visually. Presets, human-readable output.
CSP Header Builder
Build Content-Security-Policy headers visually.
CSS Minifier / Beautifier
Minify or beautify CSS. Size comparison, savings percentage. Download output.
CSV ↔ JSON Converter
Convert CSV to JSON and back. Auto-detect delimiters, headers, quoted fields.
D
E
H
Hash Generator
MD5, SHA-1, SHA-256, SHA-384, SHA-512. Text and file hashing via Web Crypto API.
HMAC Generator
Generate HMAC-SHA256/384/512 signatures for webhook verification.
HTML Beautifier / Minifier
Format or minify HTML. Custom indent, live preview. Preserves pre/script blocks.
HTML Entity Encoder
Encode/decode HTML entities. Named and numeric entities.
HTML to PDF
Convert HTML content to PDF. Rich text editor, page size options, download.
Htpasswd Generator
Generate Apache .htpasswd entries for basic authentication.
HTTP Status Codes
Searchable reference for all HTTP codes. Color-coded, descriptions, use cases.
I
Image Compressor
Compress JPG, PNG, WebP images. Quality slider, resize, before/after comparison.
Image to Base64
Convert images to Base64 data URIs. Drag-drop, multiple formats, reverse converter.
Image to PDF
Convert multiple images to PDF. Reorder, page size, orientation, margins.
IP Address Lookup
Auto-detect your IP. City, ISP, timezone, coordinates. OpenStreetMap location.
J
JavaScript Minifier
Minify or beautify JavaScript. ES6+ support, size comparison.
JSON Diff
Compare two JSON objects. Find additions, deletions, changes.
JSON Formatter & Validator
Format, beautify, minify, validate JSON. Syntax errors with line numbers.
JSON Schema Validator
Validate JSON data against a schema. Error paths, preset schemas, auto-generate.
JSON to TypeScript
Generate TypeScript interfaces from JSON. Handles nested objects.
JSON ↔ YAML Converter
Convert between JSON and YAML. Bidirectional, nested structures.
JWT Token Decoder
Decode JWT tokens. Color-coded header/payload/signature. Expiration check.
JWT Generator
Create and sign test JWT tokens. HS256 via Web Crypto API.
M
N
P
Password Generator
Cryptographically secure passwords. Custom length, bulk generate, strength meter.
Password Strength Analyzer
Entropy calculation, crack time estimates, pattern detection, common password check.
Port Number Lookup
170+ ports. Search by number or service. TCP/UDP filter. Security notes.
PDF Compressor
Reduce PDF file size. Quality slider, before/after comparison. Client side.
PDF Merger
Combine multiple PDFs. Reorder, preview pages, download merged file.
PDF to Text Extractor
Extract text from PDF files. Page-by-page, copy all, download as .txt.
Placeholder Image
Generate placeholder images with custom size, color, text.
Q
R
Regex Pattern Generator
Common regex patterns: email, URL, phone, IP. With explanations.
Regex Tester
Test regular expressions with live highlighting. Cheat sheet, find & replace.
Robots.txt Generator
Build robots.txt visually. Block AI crawlers, set sitemap.
Sitemap Generator
Build XML sitemaps visually. Add URLs with priority and changefreq.
Sitemap Validator
Validate XML sitemaps. Check URLs, dates, priority, and structure.
Webhook Tester
Generate webhook URLs. Inspect HTTP requests, headers, and body in real-time.
Email Header Analyzer
Trace email routes, check SPF/DKIM/DMARC, detect phishing.
SPF/DKIM/DMARC Checker
Check email authentication records for any domain. Improve deliverability.
Social Media Preview
Preview how your URL looks on Facebook, Twitter, LinkedIn, WhatsApp.
Tech Stack Detector
Detect CMS, framework, analytics, and hosting. Free BuiltWith alternative.
Broken Link Checker
Find dead links and 404 errors on any website. Free SEO tool.
S
Subnet Calculator / CIDR
Network address, broadcast, hosts, wildcard mask. Subnet divider. IPv4 + IPv6.
SecureBin - Encrypted Paste
Zero-knowledge AES 256 GCM pastebin. Burn after reading, password protection.
Secure Receive Links
Create a receive link and send it to anyone. They paste the secret, it gets encrypted in their browser, and only you can decrypt it. One time read, auto deleted.
Slugify / Text to URL
URL-friendly slugs. Custom separators, transliteration, bulk mode.
SQL Formatter
Beautify and minify SQL. Keyword uppercasing, indentation, highlighting.
SSH Config Generator
Generate ~/.ssh/config entries. Multiple hosts, ProxyJump.
SSL Certificate Checker
Check SSL certificate status, expiry, issuer, SANs. Visual countdown.
T
Text Encryption / Decryption
AES 256 GCM encrypt text with password. PBKDF2 key derivation. Copy encrypted output.
Timestamp Converter
Unix timestamps ↔ human dates. Live clock, milliseconds, multiple formats.
Threat Intel Map
Real time cyber threat map with live attack arcs. CISA KEV, NVD CVE, and URLhaus feeds. Attack statistics and timeline.
TOTP / 2FA Generator
Generate TOTP codes. Visual countdown, QR code, custom period/digits.
U
Under Attack?
Emergency incident response. Immediate steps to contain threats, plus a form to request expert security help.
Unit Converter
Length, weight, temperature, data, speed, time, area, volume. All units simultaneously.
URL Encoder / Decoder
Encode/decode URL components. encodeURIComponent support.
User Agent Parser
Parse browser, OS, device from user agent strings. Bot detection.
UUID Generator
Generate v4 UUIDs. Bulk generate up to 100. Multiple formats.
W
X – Y
Blog & Resources
SecureBin Blog
9 articles on security, privacy, developer guides. Zero-knowledge encryption, curl cheat sheet, regex guide, and more.
API Documentation
REST API for programmatic paste creation. curl, JavaScript, Python, Node.js examples.
Pricing & Plans
Free forever. Pro $4/mo for API access. Team $12/mo for collaboration.