Ferramentas online gratuitas

Tune CSS filter effects like blur, brightness, contrast, and hue-rotate with live preview and copy-ready CSS.

Decode Base64 strings back to UTF-8 text instantly in your browser with byte-size stats.

Format and beautify HTML markup with indentation, readable tag breaks, and optional minification.

Split a PDF into separate files by page, fixed chunks, or custom ranges — entirely in your browser.

Create soft neumorphic UI shadows for raised, pressed, and flat surfaces with copy-ready CSS and Tailwind classes.

Generate CSS triangles with the border trick or clip-path. Customize size, direction, and color with live preview.

Add, subtract, multiply, transpose, invert, and find determinants of matrices up to 6×6.

Calculate gear ratio, output RPM, and torque multiplier for spur gear trains. Single-stage, compound 2-stage, RPM solver, and tooth-count finder for target ratios. Enter driver and driven tooth counts — get speed reduction and ideal torque gain. Free, browser-based.

Combine and propagate measurement uncertainty with root-sum-of-squares (RSS). Add, subtract, multiply, or divide values with ± uncertainties, convert percent uncertainty, and compute expanded uncertainty U = k·u. Free, instant, browser-based.

Calculate percent error, absolute error, relative error, and percent difference between measured and accepted values. Step-by-step formulas for physics and chemistry lab reports. Free, instant, browser-based.

Encode UTF-8 text to Base64 instantly in your browser with byte-size stats.

Encrypt and decrypt text with RSA-OAEP public/private keys, including hybrid mode for longer messages.