Flex Tools

CronFlex

Updated 2026-10-01

A cron-expression visualiser and builder. Type or paste an expression and it draws a live grid of every value each field can take, plain-English explanation, and the next fire times — the grids double as a builder via click and drag. Supports standard crontab syntax plus the optional Quartz/Spring seconds field, and includes a searchable library of example expressions.

DiffFlex

Updated 2026-10-04

A side-by-side text comparison tool in the style of Beyond Compare and WinMerge. Paste or drop a text on each side and see what changed line by line and word by word, with all/diffs-only/context views, options to ignore case, whitespace and blank lines, and keyboard shortcuts to step through and copy differences across.

FavIconFlex

Updated 2026-10-06

A favicon maker. Draw one in the pixel editor, upload a logo, or type a letter or an emoji, then preview it live in browser tabs, on iPhone and Android home screens and in a search result. Produces every file Apple, Android and desktop browsers need, plus the HTML to paste into your page, individually or as a single zip.

FormatFlex

Updated 2026-10-04

Paste some text and read it laid out. FormatFlex detects whether it's JSON, C#, JavaScript, XML, SQL, YAML or TOML and shows it indented, coloured and numbered beside what you pasted — ideal for minified bundles, one-line SQL from a log or a flattened API response.

ImageFlex

Updated 2026-09-28

An image editor that runs entirely in your browser. Crop, resize, redact, watermark and annotate images in a familiar Snagit/Paint.NET-style workspace, powered by ImageSharp compiled to run client-side — the image itself is never uploaded anywhere.

JsonFlex

Updated 2026-10-01

A browser-based tool to view, format and explore JSON. Switch between a text editor with syntax highlighting and a collapsible tree view, with expand/collapse controls kept in sync between the two.

JwtFlex

Updated 2026-10-02

A JWT decoder and viewer. Paste a token and it's split into header, claims and signature, with per-claim explanations covering RFC 7519, OpenID Connect and common identity providers. Flags common problems such as expired tokens, bad signatures and alg:none, and can verify HMAC/RSA/ECDSA signatures.

OGFlex

Updated 2026-10-06

An Open Graph and social meta tag editor. Fill in the tags for a page and see, as you type, how its link will look in a Google result and on Facebook, X, LinkedIn, Discord, Slack and WhatsApp. Checks lengths, image size and common mistakes, then copy or download the HTML for your page's <head>.

QRFlex

Updated 2026-10-03

A QR code generator supporting 17 payload types — URLs, Wi-Fi, contact cards, calendar events, bank transfers and more — with field-level validation. Extensive styling options include colours, gradients, module and corner shapes, and an embedded logo, with a built-in check that blocks export unless the code still scans reliably.

RegExFlex

Updated 2026-09-22

A .NET regex visualiser. Paste a pattern and see it four synchronised ways: colour-coded pattern text, a railroad diagram, a plain-English breakdown, and a step-by-step trace against your own test text. Flags common regex mistakes and catastrophic backtracking risks.

SchemaFlex

Updated 2026-09-25

A command-line tool for Windows, Linux and macOS that generates an interactive, self-contained ERD diagram from a live database schema. Point it at a PostgreSQL, SQL Server, MySQL/MariaDB or SQLite connection string and it produces a single HTML file showing tables, columns, foreign keys, indexes and more — with PNG export, generated DDL and SSH tunnelling.

SetFlex

Updated 2026-09-30

A two-list comparison tool. Paste text into a left and right pane, pick an operation — left-only, right-only, intersection, union or every pairing — and the result updates live with no need to press a button.

TextFlex

Updated 2026-09-22

A text transformation and code-generation tool for developers and data wranglers. Paste rows of data, write a pattern, and get one generated output block per row — handy for SQL inserts, boilerplate code, CSV reshaping and more, with a searchable library of example patterns.

TimeFlex

Updated 2026-10-05

A wall of world clocks, like the row of clocks in an office. Your local time first, then every city you work with, each drawn as a classic analogue dial, digital seven-segment display or railway split-flap board. Cards can show the date, offset, next clock change, sunrise and sunset, the sky there, the weather and public holidays.