Tools starting with S

Convert between hourly, daily, weekly, monthly and annual pay.

Add tax to a net price or strip it out of a gross price at any rate.

Evaluate expressions with brackets, powers, roots, logs, trigonometry and factorials, in degrees or radians.

Frame a screenshot on a gradient background with padding, rounded corners and a drop shadow.

Generate strong random passwords using the browser's cryptographic random number generator.

Compare two semantic versions by precedence, including prerelease ordering and caret or tilde ranges.

Count the sentences in any text, with words per sentence and the rest of the figures.

Give a photo a warm, aged sepia tone.

Preview how a page's title and description may appear in search results.

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text using the Web Crypto API.

Generate SHA3-224, 256, 384 and 512 hashes, and SHAKE output of any length, from text or a file.

Sharpen, blur, emboss or detect edges with a convolution filter, previewed live.

Convert a shoe size between UK, US men's, US women's, EU and foot length in centimetres.

Work out simple interest and the final balance from principal, rate and time.

Check an XML sitemap for structural errors, bad dates, wrong hosts and the published limits.

Turn any title into a clean, lowercase, hyphenated URL slug with accents stripped.

Resize images for Facebook, X, LinkedIn, Pinterest, TikTok and WhatsApp.

Sort lines alphabetically, numerically, by length, in reverse or shuffled.

Test left and right channels separately with tones from bass to treble.

Estimate how long a speech, presentation, podcast or script takes to say aloud — or how many words you need to fill a time slot.

Solve for speed, distance or time, with pace per kilometre and per mile alongside.

Convert between km/h, mph, metres per second and knots.

Lay a query out clause by clause with keywords capitalised, or strip it back to a single line.

Work out stair rise, going and total run, and check them against building regulations.

Add emoji stickers to an image by clicking, at a size proportionate to the picture.

Time anything to a tenth of a second, with lap splits you can copy out.

Re-indent minified SVG markup so it can be read and edited.

Collapse an SVG onto one line and cut its file size, with a preview.

Strip editor metadata, comments and excess precision from an SVG, with a live preview.

Turn an SVG drawing into a PDF, fitted to a page or sized to the artwork.

Rasterise SVG markup or a file to PNG, JPG or WebP at any scale.