Free Online Generators for Passwords, QR Codes, Data and More

Create strong passwords and Diceware passphrases, styled QR codes with a logo, UPC and EAN barcodes, bulk UUIDs, realistic mock data as SQL or CSV, random numbers, words, sentences and GPS coordinates, plus seeded ASCII and pixel-art patterns.

Everything is generated by your browser — passwords come from its cryptographic random number generator and never cross the network, and QR codes are static images that never expire or redirect through a tracking server. Developers use them for test data and IDs, marketers for QR codes and barcodes on print, and teachers and game hosts for random words and numbers. Every generator runs instantly, so you can re-roll until the result fits.

• Mock Data & Fake Database Generator — Generate up to 250,000 rows of realistic test data locally, export as SQL, JSON, CSV, or Excel.
• Branded Vector QR Code Designer — Design a branded, logo-embedded QR code with high error correction, no dynamic-link subscription.
• CSPRNG Password & Diceware Passphrase Studio — Generate CSPRNG passwords or EFF Diceware passphrases, never transmitted over the network.
• Bulk UUID/GUID Generator — Bulk-generate up to 10,000 RFC-compliant UUID v4 or v7 identifiers, copy or download instantly.
• Vector Barcode Generator — Generate print-ready UPC, EAN, Code 128, ITF-14, and ISBN barcodes with automatic check digits.
• Geographic Centroid & Coordinate Generator — Find a true geographic midpoint or generate uniformly random coordinates within a radius.
• Random Location & Coordinate Generator — Generate one or 1,000 geographically uniform world coordinates or constrain them to a bounding box, with DMS and CSV output.
• Filtered Random Word & Name Generator — Generate random words filtered by part of speech, syllable count, length, and starting or ending letter.
• Credit Card / BIN Checksum Validator — Validate a card's Luhn checksum or grab a published Stripe/PayPal sandbox test number.
• Random Sentence Generator — Generate random sentences and paragraphs from a grammar-template engine, in fully-random or controlled modes.
• Random Number Generator — Generate cryptographically random integers or decimals in bulk, with a no-repeat mode.
• Random ASCII Art Generator — Generate seeded, reproducible procedural ASCII art patterns you can copy or download.
• Random Pixel Pattern Generator — Generate seeded, reproducible pixel-art patterns with configurable grid size and palette, exportable as PNG.
• Random Synonym Generator — Find synonyms for a word from a bundled offline dataset, filtered the same way as the Word Generator.

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