# Flowfiles

> Free browser-based tools for developers, creators, and everyday file tasks. Most tools run locally in the browser with no upload, no account, and no server-side file processing.

Flowfiles is a bilingual French and English web toolbox. The most important site sections are listed below for AI assistants, answer engines, search crawlers, and documentation agents.

## Primary Hubs

- [Flowfiles home](https://flowfiles.app/): Language selector and root entry point.
- [French tools hub](https://flowfiles.app/fr/): Main French tool directory.
- [English tools hub](https://flowfiles.app/en/): Main English tool directory.
- [Sitemap](https://flowfiles.app/sitemap.xml): Complete URL inventory with hreflang alternates.

## Image Tools

- [Image Compressor](https://flowfiles.app/en/image-compressor/): Compress, resize, and convert JPEG, PNG, WebP, GIF, BMP, and HEIC images in the browser.
- [Compression image](https://flowfiles.app/fr/compression-image/): Compresser, redimensionner et convertir des images localement dans le navigateur.
- [Image Color Replacer](https://flowfiles.app/en/color-replacer/): Replace a selected color in an image while preserving shadows, highlights, gradients, and natural texture.
- [Remplaceur de couleur](https://flowfiles.app/fr/remplaceur-couleur/): Remplacer une couleur dans une image en conservant les nuances, ombres et reflets.
- [Color Palette Extractor](https://flowfiles.app/en/color-palette/): Extract dominant colors from an image and export palettes as CSS variables, SCSS, JSON, SVG, or PNG.
- [Palette couleurs](https://flowfiles.app/fr/palette-couleurs/): Extraire les couleurs dominantes d'une image et générer des palettes exportables.
- [Image to ASCII Art](https://flowfiles.app/en/ascii-art/): Convert images to monochrome or color ASCII art locally.
- [Image vers ASCII Art](https://flowfiles.app/fr/ascii-art/): Convertir des images en ASCII art monochrome ou coloré.

## Developer and Text Tools

- [Regex Tester](https://flowfiles.app/en/regex-tester/): Test, highlight, explain, replace, and split JavaScript regular expressions.
- [Testeur regex](https://flowfiles.app/fr/testeur-regex/): Tester, expliquer et manipuler des expressions régulières JavaScript.
- [Base64 Tools](https://flowfiles.app/en/base64/): Encode and decode Base64 text, files, images, URL-safe strings, MIME, PEM, and Data URIs.
- [Outils Base64](https://flowfiles.app/fr/base64/): Encoder et décoder du Base64, fichiers, images et Data URI.
- [JSON CSV Tools](https://flowfiles.app/en/json-csv/): Convert JSON, CSV, TSV, nested JSON, API payloads, and spreadsheet-friendly files.
- [JSON CSV](https://flowfiles.app/fr/json-csv/): Convertir JSON, CSV et TSV avec aperçu tableau et export.
- [YAML JSON Tools](https://flowfiles.app/en/yaml-json/): Convert, format, and validate YAML and JSON.
- [YAML JSON](https://flowfiles.app/fr/yaml-json/): Convertir, formater et valider YAML et JSON.
- [Markdown to HTML](https://flowfiles.app/en/markdown-html/): Convert and preview Markdown with GitHub-flavored Markdown support.
- [Markdown vers HTML](https://flowfiles.app/fr/markdown-html/): Convertir et prévisualiser du Markdown en HTML.
- [Word Counter](https://flowfiles.app/en/word-counter/): Count words, characters, reading time, speaking time, readability and keyword density locally.
- [Compteur de mots](https://flowfiles.app/fr/compteur-mots/): Compter mots, caractères, temps de lecture, temps de parole et densité de mots clés SEO en français, sans upload.
- [Word Frequency Counter](https://flowfiles.app/en/word-frequency/): Analyze word frequency, keyword density, repeated words, stop words, and export CSV/JSON locally.
- [Analyseur de fréquence des mots](https://flowfiles.app/fr/frequence-mots/): Compter les occurrences de mots, analyser la densité SEO, filtrer les mots vides français, trouver les mots répétés et exporter en CSV sans upload.
- [Line Sorter](https://flowfiles.app/en/line-sorter/): Sort lines alphabetically, reverse, naturally, by length, remove duplicates, handle CSV delimiters, and process text locally.
- [Trieur de lignes](https://flowfiles.app/fr/tri-lignes/): Trier des lignes A-Z, Z-A, en tri naturel, par longueur, supprimer les doublons, nettoyer espaces/lignes vides et trier des valeurs CSV sans upload.
- [Supprimer les lignes en double](https://flowfiles.app/fr/supprimer-doublons-lignes/): Supprimer doublons, lignes vides et variantes de casse dans des listes email, CSV, mots clés SEO ou fichiers texte, localement et sans upload.
- [Remove Extra Spaces](https://flowfiles.app/en/remove-extra-spaces/): Collapse double spaces, trim line whitespace, remove blank lines, convert tabs to spaces, clean copied text and CSV whitespace locally.
- [Supprimer les espaces](https://flowfiles.app/fr/supprimer-espaces/): Supprimer espaces en trop, doubles espaces, espaces en fin de ligne, tabulations, lignes vides et espaces invisibles dans du texte, CSV, mots clés SEO ou copier-coller, sans upload.
- [Strikethrough Text Generator](https://flowfiles.app/en/strikethrough-text/): Generate Unicode strikethrough text for Discord, Instagram, WhatsApp, Twitter/X and Facebook. Copy-paste styles, no signup.
- [Générateur de texte barré](https://flowfiles.app/fr/texte-barre/): Barrer un texte en Unicode pour Instagram, Discord, WhatsApp, Twitter/X et Facebook. Texte rayé à copier-coller, gratuit, sans inscription et sans upload.
- [HTML Tag Stripper](https://flowfiles.app/en/html-tag-stripper/): Remove HTML tags, convert HTML to plain text, decode entities, preserve readable paragraphs and process content locally without upload.
- [Supprimer les balises HTML](https://flowfiles.app/fr/supprimer-balises-html/): Enlever les balises HTML, convertir HTML en texte brut, nettoyer emails, Word/CMS et contenus SEO sans upload.
- [Case Converter](https://flowfiles.app/en/case-converter/): Convert text to camelCase, PascalCase, snake_case, kebab-case, Title Case, uppercase, lowercase and related code/content formats locally.
- [Convertisseur de casse](https://flowfiles.app/fr/convertisseur-casse/): Convertir du texte en camelCase, PascalCase, snake_case, kebab-case, Title Case, majuscules, minuscules et formats SEO/code, sans upload.
- [Fancy Text Generator](https://flowfiles.app/en/fancy-text/): Generate Unicode fancy text styles such as cursive, aesthetic, bubble, gothic, upside-down and small caps for social bios and usernames.
- [Générateur de texte stylé](https://flowfiles.app/fr/generateur-texte-stylise/): Générer du texte stylé Unicode, écriture cursive, aesthetic, gothique, lettres bulles, texte à l’envers, pseudos et bios sociales, sans upload.
- [Code Formatter](https://flowfiles.app/en/code-formatter/): Format, beautify and minify HTML, CSS and JavaScript with auto-detected language and configurable indentation.
- [JSON Formatter](https://flowfiles.app/en/json-formatter/): Format, beautify, minify and validate JSON with tree view, key sorting and error line reporting.
- [SQL Formatter](https://flowfiles.app/en/sql-formatter/): Format, beautify and minify SQL queries for MySQL, PostgreSQL and SQL Server with keyword casing options.
- [Number Base Converter](https://flowfiles.app/en/number-base-converter/): Convert numbers between binary, octal, decimal, hexadecimal and any base 2-36, with two's complement and batch mode.
- [Text Diff](https://flowfiles.app/en/text-diff/): Compare two texts and highlight differences line by line, side-by-side or inline, with unified diff export.
- [Remove Duplicate Lines](https://flowfiles.app/en/remove-duplicate-lines/): Remove duplicate lines from any text, case-sensitive or insensitive, with trim and sort options.
- [JWT Decoder](https://flowfiles.app/en/jwt/): Decode, inspect, build, and verify JWT tokens locally.
- [Décodeur JWT](https://flowfiles.app/fr/jwt/): Décoder, inspecter et vérifier des tokens JWT localement.
- [UUID Generator](https://flowfiles.app/en/uuid-generator/): Generate UUID v4 and UUID v7 identifiers in bulk.
- [Générateur UUID](https://flowfiles.app/fr/generateur-uuid/): Générer des UUID v4 et v7 pour bases de données et API.
- [Unix Timestamp Converter](https://flowfiles.app/en/unix-timestamp/): Convert Unix timestamps to human-readable dates and vice versa. Seconds, milliseconds, any IANA timezone, ISO 8601, RFC 2822, batch mode. Fully local.
- [Convertisseur Timestamp Unix](https://flowfiles.app/fr/convertisseur-timestamp/): Convertir timestamp Unix en date lisible et date en timestamp. Secondes, millisecondes, fuseaux horaires IANA, ISO 8601, RFC 2822, mode batch. Entièrement local.
- [Time Zone Converter](https://flowfiles.app/en/timezone-converter/): Convert time between IANA time zones, world clock, meeting planner, UTC offsets, DST-aware conversion, and 12h/24h display.
- [Convertisseur de fuseau horaire](https://flowfiles.app/fr/convertisseur-fuseau-horaire/): Convertir l'heure entre Paris, New York, Londres, Tokyo, UTC, GMT, CET, EST, PST et IST. Horloge mondiale, réunions internationales, heure d'été et décalages UTC. Entièrement local.
- [Date Calculator](https://flowfiles.app/en/date-calculator/): Calculate days, business days, weeks, months, countdowns, date differences, and age from dates. Fully local.
- [Calculateur de date](https://flowfiles.app/fr/calculateur-date/): Calculer jours entre deux dates, jours ouvrés, échéances, compte à rebours, différence entre dates et âge en jours. Entièrement local.
- [Business Days Calculator](https://flowfiles.app/en/working-days-calculator/): Count and add working days with country holiday calendars, custom workweeks, CSV export, and shareable URLs.
- [Calculateur de jours ouvrés](https://flowfiles.app/fr/calculateur-jours-ouvres/): Calculer et ajouter des jours ouvrés avec jours fériés France, US, UK, Allemagne et Canada, semaine personnalisable et export CSV.
- [French Public Holidays Calendar](https://flowfiles.app/en/french-public-holidays/): List French public holidays (jours fériés) for any year, with weekday, bridge days (ponts), Alsace-Moselle and overseas variants, plus iCal and CSV export. Fully local.
- [Calendrier jours fériés France](https://flowfiles.app/fr/jours-feries-france/): Lister les jours fériés français par année avec dates, ponts, week-ends, Alsace-Moselle, outre-mer, export iCal et CSV. Pages satellites pour jours fériés 2026/2027, 1er mai payé, magasins ouverts et ponts.

- [TikTok Video Format Converter](https://flowfiles.app/en/tiktok-video-converter/): Convert any video to vertical 9:16 (1080×1920) for TikTok, Reels and Shorts, split a long video into clips of X seconds, crop/letterbox/blurred-background fit, bitrate and frame rate control, ZIP export of every clip. 100% in-browser, no upload, no watermark.
- [Animated Search Bar Generator](https://flowfiles.app/en/animated-search-bar/): Create a Google-style search bar that types your text letter by letter and export it as a transparent GIF, HD WebM, PNG or PNG frame sequence to overlay on TikTok, Reels and YouTube Shorts. Adjustable width, typing speed, pause, theme, fonts, cursor and icons. 100% in-browser, no upload, no watermark.

## Image and Design Tools

- [Favicon Generator](https://flowfiles.app/en/favicon-generator/): Generate every favicon size (16×16 to 512×512), a multi-size favicon.ico and a web app manifest from one image, with ZIP download and HTML snippet.
- [Générateur de favicon](https://flowfiles.app/fr/generateur-favicon/): Générer toutes les tailles de favicon, un favicon.ico multi-tailles et un manifeste PWA à partir d'une image, sans upload.
- [EXIF Metadata Remover](https://flowfiles.app/en/exif-remover/): Strip EXIF metadata (GPS, camera, date, software) from photos locally with binary JPEG stripping that preserves image quality.
- [Suppresseur EXIF](https://flowfiles.app/fr/suppresseur-exif/): Supprimer les métadonnées EXIF (GPS, appareil, date) d'une photo localement, sans recompression ni upload.
- [Placeholder Image Generator](https://flowfiles.app/en/placeholder-image/): Generate placeholder and dummy images at any dimension with custom colors, label text and PNG/JPEG/SVG export.
- [Générateur d'image placeholder](https://flowfiles.app/fr/generateur-image-placeholder/): Générer des images placeholder à n'importe quelle dimension, couleurs et texte personnalisés, export PNG/JPEG/SVG.
- [Color Converter](https://flowfiles.app/en/color-converter/): Convert colors between HEX, RGB, HSL and OKLCH with live preview and one-click copy per format.
- [Convertisseur de couleurs](https://flowfiles.app/fr/convertisseur-couleurs/): Convertir des couleurs entre HEX, RGB, HSL et OKLCH avec aperçu en direct et copie par format.
- [WCAG Contrast Checker](https://flowfiles.app/en/wcag-contrast/): Check color contrast against WCAG 2.2 AA and AAA for text, large text and UI components, with APCA preview.
- [Vérificateur de contraste WCAG](https://flowfiles.app/fr/contraste-wcag/): Vérifier le contraste des couleurs selon WCAG 2.2 AA et AAA pour le texte et les composants, avec aperçu APCA.
- [CSS Gradient Generator](https://flowfiles.app/en/css-gradient-generator/): Build linear, radial and conic CSS gradients visually with unlimited color stops, presets and one-click CSS copy.
- [Générateur de dégradé CSS](https://flowfiles.app/fr/generateur-degrade-css/): Créer des dégradés CSS linéaires, radiaux et coniques visuellement, points de couleur illimités et copie CSS.

## Date and Time Tools

- [Countdown Timer](https://flowfiles.app/en/countdown-timer/): Count down to any date with days, hours, minutes and seconds, multiple events, timezones, notifications and URL sharing.
- [Compte à rebours](https://flowfiles.app/fr/compte-a-rebours/): Compte à rebours jusqu'à une date avec jours, heures, minutes et secondes, événements multiples et partage par URL.
- [ISO Week Calculator](https://flowfiles.app/en/iso-week-calculator/): Find the ISO 8601 week number for any date, convert ISO week to a date range and browse a full year calendar.
- [Calculateur de semaine ISO](https://flowfiles.app/fr/calculateur-semaine-iso/): Trouver le numéro de semaine ISO 8601 d'une date, convertir une semaine ISO en plage de dates et parcourir l'année.
- [Cron Expression Generator](https://flowfiles.app/en/cron-generator/): Build, explain and validate cron expressions with a field builder, plain-English meaning, next run times and presets.
- [Générateur d'expression cron](https://flowfiles.app/fr/generateur-expression-cron/): Construire, expliquer et valider des expressions cron avec aperçu en clair, prochaines exécutions et exemples.

## More Text Tools

- [Random Picker](https://flowfiles.app/en/random-picker/): Paste a list of names or options and draw a random winner, with no repeats, elimination, weighted entries, team/group splitting and shuffle, crypto-secure and 100% local.
- [Random Line Picker](https://flowfiles.app/en/random-line-picker/): Pick a random line from any list with name picker, winner draw, weighted random and shuffle modes, no duplicates.
- [Tirage au sort de lignes](https://flowfiles.app/fr/tirage-au-sort-lignes/): Tirer une ligne au hasard dans une liste, tirage de gagnant, pondéré ou mélange, sans doublons et sans upload.
- [Unicode Text Converter](https://flowfiles.app/en/unicode-text-converter/): Generate bold, italic, script, fraktur, double-struck and 14 Unicode text styles to copy into social platforms.
- [Upside Down Text Generator](https://flowfiles.app/en/upside-down-text/): Flip, reverse and mirror any text using Unicode upside-down characters to copy into social platforms.

## Number Tools

- [Number to Words Converter](https://flowfiles.app/en/number-to-words/): Spell numbers in words and parse words back into digits, with cardinal, ordinal and currency (cheque) modes, decimals, negatives, British "and" and batch conversion up to decillions.
- [Random Number Generator](https://flowfiles.app/en/random-number-generator/): Generate random numbers between any X and Y, with or without repeats, as integers or decimals, sorted or in draw order, with a crypto-secure option for PINs, lottery picks and prize draws.
- [Percentage Calculator](https://flowfiles.app/en/percentage-calculator/): Find X% of Y, what percent a number is of another, and percentage increase or decrease at once.
- [Fraction to Decimal Converter](https://flowfiles.app/en/fraction-to-decimal-converter/): Convert fractions to decimals and back, including repeating decimals and mixed numbers, with step-by-step working.
- [Roman Numeral Converter](https://flowfiles.app/en/roman-numeral-converter/): Convert numbers to Roman numerals and back, with auto-detect, vinculum notation and batch lists.
- [Rule of Three Calculator](https://flowfiles.app/en/rule-of-three-calculator/): Solve any proportion by cross-multiplication, direct or inverse, with step-by-step working.
- [Weighted Average Calculator](https://flowfiles.app/en/weighted-average-calculator/): Compute a weighted mean from values and weights, compare with the simple average and find the grade still needed.
- [Coin Flip & Dice Roller](https://flowfiles.app/en/coin-flip-dice-roller/): Toss coins and roll up to 100 dice (d4 to d100) with dice notation like 3d6+2, modifiers and stats.

## Video Tools

- [Video Overlay](https://flowfiles.app/en/video-overlay/): Overlay a GIF, image or second video on a video with position, size, opacity, rotation and timing controls, no watermark.

## Games

- [Arcade hub](https://flowfiles.app/game/): Browser-playable .io games, no install.
- [KnifeStorm.io](https://flowfiles.app/game/knife/): Third-person 3D throwing-knife arena (Three.js). Slide, dodge, block, chain kills, level up and pick upgrades across four maps.

## Content Notes

- The site is static and file-oriented.
- Tools are designed for privacy: processing is local in the browser whenever possible.
- Pages include bilingual hreflang alternates and structured data where relevant.
- For the full list of pages, prefer the XML sitemap.

## Optional Full Context

- [llms-full.txt](https://flowfiles.app/llms-full.txt): Expanded AI-readable map of Flowfiles tools and page groups.