TOOLDAY · FREE CALCULATORS & CONVERTERS
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Use ToolDay to count and clean text, fix keyboard layouts, compress images, calculate aspect ratios, convert px and rem, and check color contrast in your browser.
FREE ONLINE TOOLS
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8 tools
Korean-English Keyboard Fixer
Automatically or manually recover text typed with the wrong keyboard language using Dubeolsik and QWERTY mappings.
Open toolCharacter & Word Counter
Count characters, words, lines, and exact UTF-8 or Windows-949 (CP949) bytes under an explicit newline policy.
Open toolText Cleaner
Apply NFC or NFKC plus whitespace and line cleanup, with a one-step restore to the original input.
Open toolAspect Ratio Calculator
Reduce width and height to a simple ratio, or calculate the missing dimension from a target ratio.
Open toolImage Compressor to Target KB
Compress a JPG, PNG, or WebP toward a 100 KB, 200 KB, or custom limit without uploading the image.
Open toolCombine Images · Image Joiner
Join 2–4 images side by side or vertically into one image. Check the output dimensions first, then choose the gap and background.
Open toolpx to rem Converter
Convert CSS values both ways between px and rem using a configurable root font size.
Open toolColor Contrast Checker
Calculate the WCAG contrast ratio and show AA/AAA text plus AA graphics and UI results.
Open tool