Formatters, converters, calculators and validators — no sign-up.
🔒 Runs in your browser
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Hands-free interval timer for physiotherapy and exercise: set hold, pause and series, with big colour, beep, voice and vibration cues. Runs in your browser.
Decode and encode SMS PDU strings (SMS-DELIVER / SMS-SUBMIT), switch GSM-7 and UCS-2, and see why Romanian diacritics cut a message to 70 characters.
Parse an IMSI or ICCID into its parts, or paste a log to mask every IMSI, ICCID, IMEI, phone number and IP with stable aliases — all in your browser.
Validate an IMEI check digit, split TAC, serial and check digit, decode IMEISV, and generate valid test IMEIs — structure only, no device database.
Search mobile network codes (MCC/MNC/PLMN), convert a PLMN to its SIM BCD hex, and compute the ePDG VoWiFi hostname — with accurate Romanian operators.
Format, validate and minify JSON, or convert JSON ⇄ YAML and JSON ⇄ CSV. Runs 100% in your browser — no upload.
Generate cryptographically secure random passwords with a strength meter. Runs locally in your browser.
Convert Unix file permissions between octal (755), symbolic (rwxr-xr-x) and a chmod command. Setuid, setgid and sticky bits supported.
Encode text or files to Base64 (incl. URL-safe and data URIs) and decode back, with correct UTF-8 handling. Runs in your browser.
Convert numbers between binary, octal, decimal, hex and any base 2–36. Arbitrary precision (BigInt), runs in your browser.
Percent-encode or decode text and full URLs, and inspect query parameters as an editable table. Runs in your browser.
Build trackable campaign URLs by adding utm_source, utm_medium, utm_campaign, utm_term and utm_content. Keeps existing params and hash. Runs in your browser.
Convert Unix timestamps to human-readable dates and back, with auto-detected seconds/milliseconds/microseconds. Runs in your browser.
Pick a date and time in one zone and read it instantly in cities worldwide, with UTC offsets and next/previous-day markers. Runs in your browser.
Generate UUID v4, UUID v7 or ULID identifiers in bulk, and decode the timestamp embedded in a v7 or ULID. Runs in your browser.
Generate random numbers or random codes — letters, digits, symbols. Presets for dice, coin, Loto 6/49, PINs and vouchers. Free, in your browser.
Paste a list of names and draw one or more winners at random. Fair, unbiased picks for raffles and giveaways. Runs in your browser.
Generate MD5, SHA-1, SHA-256, SHA-512 and CRC32 hashes from text or files, plus HMAC. Runs entirely in your browser — nothing is uploaded.
Decode a JWT's header and payload, inspect exp/iat/nbf claims, and verify HS256 or RS256 signatures. The token never leaves your browser.
Test JavaScript regular expressions against any text: see every match, named and numbered groups, and run find-and-replace. Runs entirely in your browser.
Compare two texts by line, word or character, with clear added/removed highlighting. Runs entirely in your browser — nothing is uploaded.
Format and beautify SQL for five dialects (standard, MySQL, PostgreSQL, T-SQL, SQLite), with uppercase keywords and 2/4-space indent. Runs in your browser.
Parse a cron expression into a plain-English or Romanian sentence and see its next 10 runs in your time zone and Europe/Bucharest.
Convert colors between hex, RGB, HSL and OKLCH, and check WCAG AA/AAA contrast between any two colors. Runs entirely in your browser.
See your public IP address — IPv4 or IPv6 — plus your browser User-Agent and accepted languages. Read from your own request; nothing is stored.
Escape and unescape text as HTML entities or JS/JSON string literals, with numeric HTML entities and backslash escapes. Runs in your browser.
Generate SEO, Open Graph and Twitter card meta tags from one form, with proper attribute-escaping and live Google result and social card previews.
Build a .gitignore from Node, Python, Java, Go, Rust, C/C++, VS Code, JetBrains, macOS, Windows and more — merged and deduplicated, no upload.
Look up every standard HTTP status code (1xx-5xx) with its meaning and when to use it. Search by code or keyword — runs entirely in your browser.
Paste CSV or TSV (Excel/Sheets paste) and get a Markdown or HTML table instantly. Handles quoted fields, embedded commas and auto-detects the delimiter.
Generate lorem ipsum placeholder text — paragraphs, sentences, words or list items — plus fake names and emails. Runs in your browser.
Parse any User-Agent string into browser, OS, rendering engine and device type. Flags bots and crawlers. Runs 100% in your browser — no upload.
Build a robots.txt with a visual editor for user-agents, Allow, Disallow, crawl-delay and sitemaps, then test whether a crawler may fetch any path.
Generate fake, valid-format Romanian test data — CNP, IBAN, CUI, names, emails — with correct check digits. Random values, not real people.
Write Markdown with a live HTML preview. GitHub-Flavored: tables, code, strikethrough. Copy the HTML or Markdown, or export a PDF. Runs in your browser.
Beautify or minify JavaScript, CSS, HTML and JSON in your browser. Pretty-print with your indent size; safe minify for CSS and JSON. Nothing is uploaded.
Generate Apache .htaccess 301 and 302 redirect rules with mod_rewrite. Force HTTPS, canonicalise www vs non-www, and disable directory listing.
Generate a Code 128 barcode from text, SKUs or serial numbers — automatic check digit, adjustable size, download or copy as SVG. Runs in your browser.
Build a private Certificate Authority in your browser: issue, renew, inspect and export SSL/TLS certificates as PEM, DER or PKCS12. Nothing is uploaded.
Share notes with your team via one link. End-to-end encrypted in your browser and auto-deleted after 1 hour — we store only ciphertext we can't read.
Validate any IBAN with the ISO 7064 mod-97 check. Romanian IBANs also show the bank name, incl. 2025 merger notes. Runs offline.
Official daily BNR reference rates for EUR, USD, GBP, CHF and more — convert any amount and look up the rate for a past date.
Strip accents and diacritics from any text (é→e, ș→s, ü→u) while keeping punctuation, digits and emoji intact. Runs in your browser.
Turn any title into a clean, URL-safe slug. Handles Romanian and German letters, strips accents and emoji, with separator, case and length options.
Count words, characters, sentences and paragraphs in any text, with an estimated reading time. Runs entirely in your browser.
Turn plain text into bold, italic, script, double-struck, small-caps and other Unicode fonts you can copy and paste anywhere. Runs in your browser.
Convert text to lowercase, UPPERCASE, Title Case, camelCase, PascalCase, snake_case, kebab-case and more — all at once. Copy any format. Runs in your browser.
Sort, deduplicate, trim, and reformat lines of text — remove empty lines, add a prefix or suffix, and reverse order. Runs entirely in your browser.
Compare two lists line by line to find items in both, only in list A, or only in list B. Case-insensitive and trim options included.
Extract email addresses, URLs, phone numbers, IP addresses and numbers from any text, deduplicated by category. Runs entirely in your browser.
Count how often each word appears in your text, filter stop words, and export as CSV — sorted by frequency, all in your browser.
Split text by a delimiter, fixed length or regex into lines or columns, or join lines back with any separator. Runs entirely in your browser.
Paste a list of names and split them into random groups: set the number of groups or a target group size. Fair shuffle, remainders spread evenly.
Repair mojibake — text where UTF-8 was read as Windows-1252, so PiaÈ›a becomes Piața and é becomes é. Fixes broken diacritics and quotes, in your browser.
Analyze text readability: Flesch Reading Ease, Flesch-Kincaid, Gunning Fog, SMOG and more, plus word, sentence and syllable counts and reading time.
Spell any number in words in English or Romanian, with a currency mode (dollars, euros, lei) for cheques, invoices and contracts.
Convert HTML to clean plain text or to Markdown: strips tags, decodes entities, keeps links and lists. Runs entirely in your browser.
Analyze keyword density for SEO. Count single words, 2- and 3-word phrases with percentages, plus an optional stop-word filter. Runs in your browser.
Calculate a percentage of a number, what percent one number is of another, percentage change, or a percentage increase/decrease.
Calculate the monthly payment, total interest and full amortization schedule of a loan or mortgage — annuity or equal-principal. Runs in your browser.
Calculate exact age in years, months and days from a birth date, plus days remaining until the next birthday. Runs entirely in your browser.
Days between two dates: calendar days, weeks, months, years and business days — optionally excluding Romanian legal holidays. Runs in your browser.
Calculate BMI from weight, height, age and sex — for women, men and children. WHO category, healthy weight range, body-fat % and BMI table.
Convert length, mass, temperature, volume, area, speed and digital storage units, with live two-way conversion. Runs entirely in your browser.
Count down to a date or a duration, or run a stopwatch with laps. Shareable link, on-screen alarm and beep. Runs in your browser.
Paste a list of numbers, sort them ascending or descending, and see count, sum, average, min, max and median. Understands both US and EU decimal formats.
Estimate the fuel cost of any trip from distance, consumption and pump price. Supports L/100 km, km/L and mpg, round trips and cost split per person.
Generate a QR code for text, a URL, Wi-Fi, a contact (vCard), a phone number or an email — download as PNG or SVG. Runs in your browser.
Build one PDF from images (JPG, PNG, WebP) and existing PDFs in any order — reorder, then download. Runs entirely in your browser, no upload.
Extract pages from a PDF by range, e.g. 1-3, 5, 8-10, into a new file. Nothing is uploaded; the split runs entirely in your browser.
Identify a file's true type from its magic bytes, not its extension — images, PDF, ZIP, audio, video and more, checked locally in your browser.
Crop, resize and compress an image in one place, with a live before/after preview — export as JPEG, PNG or WebP. Nothing is uploaded; runs in your browser.
Free multitrack audio mixer and editor. Layer voice over music, arrange clips on a timeline, trim and fade, then export one file. Runs in your browser.
Plan projects on a Kanban board: clients, boards, columns and cards you drag between statuses. Attachments, PDF export, saved in your browser.
Build and validate mobile data APN settings, start from Romanian operator presets, and export to Android apns-conf.xml or an iOS configuration profile.
Convert channel numbers to frequencies and back for GSM, UMTS, LTE (EARFCN) and 5G NR (NR-ARFCN + GSCN), with the Romanian band plan built in.
Decode ISO 7816 / SIM APDU traces in your browser: command CLA/INS/P1/P2/Lc/Le and the response status word, in plain English.
Decode SIM Toolkit (STK/CAT) proactive commands from hex: command type (DISPLAY TEXT, SET UP MENU, SEND SMS…) and the comprehension-TLVs.
Read the structure of a SIM OTA secured packet (03.48): SPI security flags, KIc/KID key-set and algorithm, TAR and counter. Structure only — never decrypts.
Paste Android `dumpsys telephony.registry` output and get a clean serving-cell card: RAT, operator, MCC/MNC, TAC, EARFCN to band, and signal levels.
Fill a form and get a clean Markdown test report or bug ticket, with an option to scrub IMSI/IMEI/phone numbers from the logs before you share it.
A searchable list of Romanian operator USSD codes (Digi, Orange, Vodafone) plus generic GSM MMI codes like *#06# for IMEI and *21* for call forwarding.
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