New this week

Creates linear and 2D barcodes from text.

Turns a code snippet into a styled image for sharing.

Generates tints and shades of a base color.

Converts a photo into a cross stitch chart with thread colors.

Creates repeating background patterns in pure CSS.

Builds CSS clip-path shapes visually and gives the code.

Drag curve handles to design CSS easing functions and preview the motion.

Builds frosted-glass CSS effects with live preview.

Creates pure CSS spinners and loading bars with adjustable style.

Designs toggle switches in pure CSS.

Produces CSS border-trick triangles and arrows.

Generates syntactically valid but random IBANs for testing forms.

Sandbox where sand, water, fire and lava interact on a grid.

Animated Game of Life with drawing tools and 3D view.

Suggests Google Fonts that pair well together.

Turns a photo into a brick mosaic plan with a parts list.

Converts a photo into a numbered paint-by-numbers template.

Converts an image into a Perler bead pattern with color counts.

Generates React Native shadow styles for iOS and Android elevation.

Converts a photo into a thread-and-nails string art plan.

Generates random organic blob shapes as SVG.

Converts stroked SVG paths into filled shapes.

Explains and demonstrates the Caesar cipher with a working encoder.

Emulates an Enigma machine and shows how the wiring changes each letter.

Suggests broad, niche and long-tail tags for a YouTube video topic.

Generates random passwords or memorable word-based ones with length and symbol options.

World clock with current times across the globe and a time converter.

Searchable database of Pathfinder 2e rules, spells, feats, equipment and creatures.

Single-file web page that produces TOTP codes from your secret without an account.

Shows two-factor authentication codes for a pasted secret key.

Browser viewer for molecular structures that loads PDB, SDF and other files.

Converts a photo into a printable lithophane STL, working offline in the browser.

Opens 3D model files such as OBJ, STL, 3DS and glTF in the browser, with local processing noted on the page.

Simulates Warhammer 40,000 attack dice and shows hit, wound and save probabilities as charts.

Generates Brazilian postal codes (CEP) for form testing.

Generates syntactically valid CNH driver licence numbers for tests.

Generates valid Brazilian CNPJ company numbers for test data.

Generates valid Brazilian CPF numbers for software testing.

Generates fictional Brazilian company documents (CNPJ, state registration, CEP).

Generates fictional Brazilian person records (name, CPF, RG, address) for testing.

Creates QR codes from text or URLs, interface in Portuguese.

Generates Renavam vehicle registration numbers for testing.

Generates RG identity numbers following SSP-SP format for testing.

Portuguese password generator with length and character options.

Checks whether a CNH number's check digits are valid.

Checks whether a CNPJ number's check digits are valid.

Checks whether a CPF number's check digits are valid.

Minimalist Eisenhower matrix with drag and drop, a Zen mode and no login, saving data locally.

Drag handles to create organic blob shapes using the eight-value border-radius syntax.

Estimates how long a circuit runs on a chosen battery type from its capacity and the load.