Developer utilities
- JSON Formatter & ValidatorFree online JSON formatter and validator. Beautify or minify…
- Base64 Encode & DecodeEncode text to Base64 or decode Base64 back to text, UTF-8 s…
- URL Encode & DecodePercent-encode or decode URL components in your browser. Use…
- JWT DecoderDecode a JSON Web Token's header and payload in your browser…
- SHA Hash GeneratorGenerate SHA-256, SHA-1 or SHA-512 hashes of any text in you…
- Text ↔ Binary ConverterConvert text to binary (8-bit, UTF-8) and binary back to tex…
- Text ↔ Hex ConverterConvert text to hexadecimal bytes (UTF-8) and hex back to te…
- Strip HTML TagsRemove all HTML tags from a snippet and keep just the text, …
- HTML Entity Encode & DecodeEncode special characters to HTML entities or decode entitie…
- JSON String Escape & UnescapeEscape text into a JSON string literal or unescape it back, …
- Query String to JSON & BackParse a URL query string into JSON, or build a query string …
- CSS Unit Converter (px, rem, em, pt)Convert CSS units between px, rem, em and pt with a configur…
- JSON Diff — Compare Two JSON ObjectsDiff two JSON objects and highlight added, removed and chang…
- Regex Tester & DebuggerTest and debug regular expressions with live match output, c…
- Cron Expression Builder & ExplainerPaste a cron expression to get a plain-English explanation a…
- HTTP Status Code LookupLook up any HTTP status code — meaning, category, common cau…
Text tools
- Text Case ConverterConvert text between camelCase, snake_case, kebab-case, Pasc…
- URL Slug Generator (Slugify)Turn any title into a clean, URL-safe slug. Lowercases, stri…
- Word & Character CounterCount words, characters, sentences, lines and reading time a…
- Remove Duplicate LinesRemove duplicate lines from a list while keeping the origina…
- Sort LinesSort lines alphabetically or numerically, ascending or desce…
- Reverse TextReverse text by characters, words or lines in your browser.…
- Text RepeaterRepeat a string a given number of times, instantly in your b…
- Add Line Numbers to TextPrefix each line of text with a line number, in your browser…
- Remove WhitespaceCollapse extra spaces, strip all whitespace, or remove line …
- ROT13 & Caesar CipherEncode or decode text with ROT13 or any Caesar shift, in you…
- Word Frequency CounterCount how often each word appears in your text and see the t…
- Shuffle / Randomize LinesRandomly shuffle the order of lines in a list, in your brows…
- Remove Accents / DiacriticsStrip accents and diacritics from text (café → cafe) in your…
- Remove EmojiStrip all emoji and pictographs from text, in your browser.…
- Email ExtractorPull all email addresses out of a block of text, de-duplicat…
- URL ExtractorPull all links out of a block of text, de-duplicated, in you…
- List ↔ Comma-Separated ConverterConvert a list of lines to a comma-separated string and back…
- Twitter / X Thread FormatterPaste a long piece of text and auto-split it into a numbered…
- Readability Score CheckerCheck the Flesch-Kincaid reading grade level, reading ease s…
- Paraphrase Similarity CheckerCheck how similar two texts are — useful for detecting near-…
Converters
- JSON to CSV & CSV to JSONConvert a JSON array of objects to CSV, or a CSV table to JS…
- Color Converter — HEX, RGB, HSLConvert a color between HEX, RGB and HSL formats instantly i…
- Unix Timestamp → DateConvert a Unix timestamp (seconds or milliseconds) to a huma…
- Date → Unix TimestampConvert a date or ISO string into a Unix timestamp (seconds …
- Number Base ConverterConvert numbers between binary, octal, decimal and hexadecim…
- Morse Code TranslatorTranslate text to Morse code and back, in your browser.…
- NATO Phonetic SpellingSpell out text in the NATO phonetic alphabet (Alpha, Bravo, …
- Roman Numeral ConverterConvert numbers to Roman numerals and Roman numerals back to…
- Temperature Converter (C / F / K)Convert temperatures between Celsius, Fahrenheit and Kelvin …
- Aspect Ratio CalculatorFind the simplified aspect ratio of any width × height — gre…
- Byte Size Converter (KB, MB, GB)Convert a number of bytes into KB, MB, GB, TB and PB, in you…
- Duration Converter (Seconds → HH:MM:SS)Convert a number of seconds into hours, minutes and seconds,…
- Length / Distance ConverterConvert length between mm, cm, m, km, inches, feet, yards an…
- Weight / Mass ConverterConvert weight between mg, g, kg, ounces, pounds and stone, …
- Number FormatterAdd thousands separators to a number with comma, space or pe…
- Decimal to Fraction ConverterConvert a decimal number into a simplified fraction, in your…
- Timezone ConverterConvert a time between any two IANA timezones instantly — DS…
- Image Format ConverterConvert images between JPEG, PNG, and WebP. Adjust quality, …
- HEIC to JPG ConverterConvert iPhone HEIC/HEIF photos to JPEG in your browser. Bat…
Generators
- Lorem Ipsum GeneratorGenerate placeholder lorem ipsum paragraphs for mockups and …
- UUID v4 GeneratorGenerate a random RFC-4122 version-4 UUID in your browser us…
- Strong Password GeneratorGenerate a strong random password in your browser with the s…
- Random Number GeneratorGenerate a secure random number between any two bounds, in y…
- Random String GeneratorGenerate a random alphanumeric, hex or letter string of any …
- QR Code GeneratorGenerate QR codes for any URL or text. Download as PNG. Brow…
Design tools
- Color Contrast Checker (WCAG)Check the contrast ratio between two colors and see if they …
- Color Palette GeneratorGenerate a harmonious 5-color palette from a seed color — co…
- Random Color GeneratorGenerate a random color with HEX, RGB and HSL values — in yo…
- Social Media Image ResizerResize images to exact dimensions for Instagram, TikTok, Twi…
- Color Picker from ImageClick any pixel in an uploaded image to get its hex, RGB, an…
- CSS Gradient GeneratorVisually build linear, radial, and conic CSS gradients and c…
- Image CompressorCompress JPEG, PNG, and WebP images up to 80% smaller in you…
- Color Blind SimulatorSimulate deuteranopia, protanopia, tritanopia, and achromato…
Calculators
AI creator tools
- AI Prompt Token CounterCount the approximate tokens in your prompt for GPT-4, Claud…
- Video Frame Rate Converter CalculatorCalculate the output duration and frame count when convertin…
- Video File Size CalculatorEstimate the file size of a video from its bitrate and durat…
- Video Bitrate CalculatorGet the recommended video bitrate for YouTube, TikTok, Insta…
- Hashtag GeneratorGenerate relevant hashtags for Instagram, TikTok and Twitter…
- Instagram Caption GeneratorGenerate engaging Instagram captions from a photo descriptio…
- Viral Hook Generator for Reels & TikTokGenerate scroll-stopping opening hooks for Instagram Reels, …
- YouTube Chapter Timestamp GeneratorGenerate YouTube chapter timestamps from a transcript or out…
- SRT Subtitle to Blog Post ConverterTurn an SRT subtitle file or video transcript into a formatt…
Video & media tools
- SRT Subtitle Timestamp ShifterFix out-of-sync subtitles by shifting all timestamps in an S…
- Video Metadata ViewerView duration, resolution, and embedded tags from MP4, WebM,…
- Video Frame ExtractorExtract any video frame as a PNG by seeking to any timestamp…
- Silent Audio AdderGenerate a silent WAV matched to your video's duration for m…
- Lossless Video TrimmerSet in/out points on a video and capture the trimmed segment…
AI & metadata tools
- AI Writing Detection Score EstimatorScore text for AI-writing patterns — perplexity, burstiness …
- GPS Coordinate Generator by CityGenerate realistic GPS coordinates for any major city — for …
- EXIF Data ViewerView all EXIF metadata fields in any image — camera, GPS, da…
- Image Metadata RemoverStrip EXIF, IPTC, XMP, GPS, and all metadata from JPEG and P…
- C2PA Content Credentials CheckerDetect C2PA JUMBF markers and Content Credentials in images …
- AI Watermark CheckerScan images for AI tool signatures from Midjourney, DALL·E, …
- AI Image DetectorDetect whether an image was generated by AI using metadata a…
- Steganography DetectorVisualise LSB planes to detect hidden data embedded in image…
- EXIF Date ChangerRewrite EXIF date fields in JPEG images without re-encoding.…
- IPTC Metadata EditorView and edit IPTC caption, credit, copyright, and location …