encoding and decoding tools Tools

Encode text to Base32 or decode Base32 strings back to UTF-8. Supports RFC 4648 alphabet, optional padding, copy, and download.

Encode UTF-8 text to Base58 or decode Base58 strings used in crypto wallets and compact IDs - browser-based, no data leaves your device.

Encode numbers or text to Base62 and decode strings back instantly in your browser. Ideal for URL shorteners and short IDs. Free, no signup, bulk conversion.

Free online tool to encode or decode Base64 data. Fast, private, and easy to use with no login required. All processing happens in your browser.

Convert Base64 strings to images instantly. Visualize Base64 image data and download as image files. Support for PNG, JPG, GIF, WebP, and SVG.

Base64 to PDF converter decodes Base64 strings into a viewable PDF and encodes PDF files back to Base64. Runs entirely in your browser, no upload, no signup.

Encode or decode URL-safe Base64 strings used in JWTs, OAuth tokens, and signed URLs - runs in your browser, no data sent.

Basic auth header generator builds the Authorization: Basic header from a username and password, with curl and fetch snippets, and decodes existing headers back to credentials.

Estimate body fat percentage using U.S. Navy measurements. Get fat mass, lean mass, and category instantly for fitness tracking.

Braille translator converts text to Unicode braille and back using Grade 1 English Braille, with capital and number signs plus a dot-pattern chart. Free, no signup.

Encrypt or decrypt text with the Caesar cipher. Choose any shift from 1-25, use ROT13 instantly, and copy the result in one click.

Decode an X.509 PEM certificate to view its subject, issuer, validity, serial number, public key, SANs, and SHA-1/SHA-256 fingerprints. Private, client-side decoding.

CSR decoder reads the subject, public key algorithm and size, and requested SANs from a PEM certificate signing request, and verifies its self-signature. Free, no signup.

Create perfect rounded corners with visual editor. Generate CSS border-radius for all corners individually or uniformly with support for pixels and percentages.

Generate cursive, script, fraktur, and double-struck text using Unicode. Copy and paste fancy cursive text anywhere - social media, bios, messages, and more.

CVSS calculator with the official v3.1 base and temporal equations. Score a vulnerability or paste a vector string from NVD to decode it. Shows impact and exploitability subscores.

Calculate sale prices, find discount percentages, determine original prices, and compute stacked/double discounts. Essential for shopping and retail.

Emoji translator turns English text into emoji and decodes emoji back into plain words using a 301 entry dictionary. Runs in your browser, free, no signup.

Convert .env files to Kubernetes Secret YAML manifests with base64-encoded values. Paste your environment variables and get a ready-to-apply Secret spec instantly. Free.

Generate stylish Unicode text fonts for Instagram bios, Twitter posts, and social media. 18 styles including bold, italic, cursive, gothic, circled, and more.

Calculate your semester and cumulative GPA instantly. Supports 4.0 scale, 10.0 CGPA scale, and percentage systems. Add courses, grades, and credits for accurate results.

Gzip-compress text to Base64 or decompress Base64 gzip data back to text in your browser. Shows the compression ratio and downloads as .gz. Free, private, powered by CompressionStream.

Make heart text art in 8 styles - ASCII hearts, emoji art, rose art and love messages. One click to copy, then paste anywhere. Free, no signup required.

Hex to text converter decodes hexadecimal bytes into readable ASCII or UTF-8 text and converts text back to hex with 0x, \x, comma or space formats. Free and instant.

Hex viewer online: open any binary file and read it as a hex dump with offsets and an ASCII column. Detects the file type from magic bytes, searches text or hex patterns, jumps to any offset.

Generate HMAC signatures using SHA-256, SHA-512, MD5, and more, then export as hex, Base64, or Base64URL - fully browser-based.

Free online tool to encode or decode HTML entities. Fast, private, and easy to use with no login required. All processing happens in your browser.

Encode and decode HTML entities instantly in your browser. Converts <, >, &, ", and 20+ named entities. Supports numeric encoding for Unicode characters. Free, no signup.

Convert decimal numbers to IEEE 754 binary and hex, or decode raw bits back into a float instantly. Supports 32-bit single and 64-bit double precision formats.

Resize images to specific dimensions or percentage online. Maintain aspect ratio and download in high quality. Free, browser-based, no upload required.

Obfuscate JavaScript code to make it harder to read and reverse-engineer. Remove comments, encode strings to unicode escapes, compact whitespace, and optionally wrap with eval/base64 encoding.

Escape and unescape JSON strings online. Convert special characters like quotes, backslashes, newlines, and tabs to their JSON-safe equivalents instantly.

Stringify JSON objects with custom formatting, sort keys, escape Unicode, and parse stringified JSON strings back to objects. Real-time conversion with validation.

Convert JSON arrays or objects into clean Markdown tables with alignment options, escaped cells, and copy-ready output for docs, GitHub, and README files.

Decode JSON Web Tokens (JWT) to view header, payload, and signature. Check token expiration and validate JWT format. Free, secure, and privacy-first.

Analyze keyword frequency and density percentages in your content. Filter by minimum word length, exclude stop words, and identify top repeated terms for better on-page SEO.

Kubernetes secret decoder reveals every Base64 value in a Secret manifest at once, exports to .env or stringData, and encodes plain values back into a ready-to-apply Secret.

Latency percentile calculator turns raw response time samples into p50, p95, p99 and p99.9 with mean and standard deviation. Runs in your browser, free, no signup.

Calculate your lean body mass (LBM) using the Boer, James, and Hume formulas or exact body fat percentage. Shows fat mass, lean mass, body fat category, and recommended protein intake.

Leet speak translator converts text to 1337 at three intensity levels and decodes leet back to plain English. Works both ways in your browser, free, no signup required.

Find your love compatibility percentage! Enter two names and get instant love score, compatibility breakdown across 8 traits, and fun results to share. Perfect for Valentine's Day.

Make obfuscated Lua readable in your browser. Reindent blocks, decode string.char sequences, unescape hex and decimal string escapes, and convert hex numbers. Free readability helper, not a decompiler.

Obfuscate Lua source code in your browser. Strip comments, minify whitespace, rename local variables, and encode strings as string.char sequences. Free, private, client-side Lua obfuscator, no upload.

Remove comments from Makefiles instantly in your browser. Strip full-line and inline hash comments, respect escaped hashes, drop blank lines, and trim trailing whitespace. Free, private, no upload.

Calculate profit margin, markup percentage, and selling prices. Find margin from cost and revenue, convert between margin and markup, and plan pricing strategy.

MongoDB ObjectId decoder extracts the creation timestamp, random value and counter from any ObjectId, and builds boundary IDs for date range queries. Free, no signup.

Calculate percentages easily: find X% of Y, what percent X is of Y, percentage change, and increase/decrease by percentage.

Protobuf decoder that reads raw Protocol Buffers bytes with no .proto schema. Paste hex or Base64, or drop a .pb file, and see field numbers, wire types and nested messages.

Punycode converter encodes international domain names to xn-- ASCII and decodes them back, flagging mixed-script homograph lookalikes. Free, private, no signup.

Scan and decode QR codes from images or camera. Upload a QR code image or use your webcam to read QR codes instantly. Free online QR code scanner.

Query string to JSON converter parses URL parameters into readable JSON, handling nested brackets, repeated keys and plus-encoded spaces, and converts JSON back to a query string.

Analyze API rate limit headers instantly to see remaining quota, reset countdown, and usage percentage. Supports X-RateLimit, RateLimit, and Retry-After.

Calculate, simplify, and convert ratios to decimal and percentage values. Generate equivalent ratios instantly for scaling and proportion problems.

View the raw contents of any file online - decoded text in UTF-8, Latin-1, or Windows-1252, plus a byte-level hex dump. Auto-detects binary files. Free, private, no upload.

Calculate Return on Investment (ROI) instantly. Enter your investment cost and final return to see profit percentage, net gain, and annualized ROI for any investment period.

SAML decoder that turns a SAMLRequest or SAMLResponse into readable XML in your browser. Handles URL encoding, Base64 and raw DEFLATE, then pulls out Issuer, ACS URL and NameID.

Small text generator converts letters to superscript or subscript Unicode - runs in your browser with no signup. Ideal for social media bios and captions.

Decode Discord, Twitter/X, and Instagram snowflake IDs into timestamps and worker IDs instantly in your browser. Free, no signup, bulk decoding supported.

Decode a JavaScript or CSS source map to trace minified line and column numbers back to the original file, line, and symbol name. Free, instant VLQ decoding, fully client-side.

Calculate stock trading profit or loss including brokerage fees and taxes. Find net gain, return percentage, and break-even price for your trades.

Generate strikethrough text (l̶i̶k̶e̶ ̶t̶h̶i̶s̶) you can copy and paste anywhere. Supports single strike, double strike, slash, and tilde styles using Unicode characters.

Compare two texts for similarity using Levenshtein edit distance. Get a similarity percentage, common substring, and prefix/suffix stats instantly. Free, no signup.

Convert text into ASCII art with dozens of font styles - no install needed. Perfect for banners, headers, and decorative terminal text, free to use.

Convert text to binary code and binary back to text instantly. Translate any string into its 8-bit binary ASCII representation. Essential tool for computer science and programming.

Calculate tips and split bills easily. Choose tip percentage, split between multiple people, and get per-person totals instantly.

Generate live TOTP 2FA codes from a base32 secret key. Compatible with Google Authenticator and Authy. Supports 6/8 digits and 30/60s periods. Runs entirely in your browser.

Inspect every Unicode character in your text: code points, hex values, UTF-8 bytes, and types. Find invisible characters and debug encoding issues free online, no signup.

Unicode normalizer converts text between NFC, NFD, NFKC, and NFKD forms and shows codepoint, UTF-16, and UTF-8 counts, so lookalike strings stop breaking equality checks.

Compare two products by price per unit and savings percentage to find the best value. Great for grocery shopping, bulk buying, and cost-per-use analysis.

Free online tool to encode or decode URL components. Fast, private, and easy to use with no login required. All processing happens in your browser.

UUID decoder identifies the version and variant of any UUID and extracts the creation timestamp from v1, v6 and v7 identifiers, plus clock sequence and node. Free and private.

Decode WebAuthn passkey attestation and assertion responses into readable flags, AAGUID, and COSE keys. Free client-side debugger, no signup, no data leaves your browser.

YAML to properties converter turns Spring Boot application.yml into flat key=value properties and back to nested YAML, keeping list indexes and escapes. Free, no upload.

Calculate z-score, percentile, and tail probability from value, mean, and standard deviation for normal distribution analysis.

Generate creepy zalgo/glitch text using Unicode combining characters. Adjust intensity and placement of glitch effects. Copy and paste corrupted text anywhere.