DIMA Tools51 free online tools

Width and height to aspect ratio, resize without stretching, read an image's ratio, screen size from the diagonal - 16:9, 4:3, 21:9, 9:16, free

Convert color codes between HEX, RGB, HSL, HSV, CMYK and OKLCH, copy CSS, Tailwind, Swift or Flutter code and check WCAG contrast, free

Resize one image into Twitch emotes and sub badges, Discord emoji and stickers, Slack, YouTube and Kick emotes - exact sizes, file-size check, ZIP, free

Pixelate, blur or black out faces, license plates and text in a photo - full-resolution PNG/JPG, runs in your browser, free

Turn URLs, text, Wi-Fi and vCards into QR codes, and product numbers into barcodes. Colors, logo, size, PNG/SVG download - free, no sign-up

Convert JPG, PNG, animated GIF, BMP and TIFF to WebP. Quality and width control, batch - free

Drop, paste or upload photos, screenshots and scans to copy their text - keeps lines and paragraphs, reads tables row by row, 25+ languages, free

30 presets for Instagram, YouTube, Threads, Kakao, Naver, Coupang and OG images - free

AI removes photo backgrounds to transparent PNG. No watermark, up to 2000px, white-background JPG export - free

Extract 1–12 dominant colors from any image as HEX/RGB. Copy as CSS variables or JSON - free

Download 3,575 Apple emojis as transparent PNG in 32–512px, including 270 flags and the 2024–2025 additions. Search by name, browse by category - free

Resize photos by pixels or percentage. Lock ratio, batch, JPG/PNG/WebP output - free

PDF pages to JPG, or several JPG/PNG photos into one PDF. Resolution and quality options, ZIP download - free

Free YouTube downloader - Download 1080P high quality MP4, no installation required

Free MP4/MP3 downloads from Instagram Reels, TikTok, Twitter (X), Facebook, Twitch, SoundCloud and 1000+ sites - no install

Paste a YouTube link to get the full transcript with or without timestamps, in any caption language - copy it or download TXT and SRT, free

Paste a YouTube link and download the thumbnail in up to 1280×720 - free, no install

Debt service ratio and remaining borrowing room under Korea's 40%/50% caps, with stress DSR - free

LTV cap and maximum mortgage by region, homes owned and first-time status - free

Estimate Korean job-seeker benefits, check eligibility and see how to apply - free

Split totals into supply price and 10% VAT, or add VAT to a net price - free

VAT, income tax and withholding deadlines and refund dates for Korean businesses - free

Employee and employer contributions for Korea's four social insurances - free

Monthly parental leave pay and total under the 2025 rules, incl. 6+6 scheme - free

Net monthly pay from annual salary, monthly wage or hourly rate after social insurance and income tax - free

How many survey responses you need for a confidence level and margin of error, with the formula and a sample size table - free

Break-even units and sales from fixed costs, price and variable cost, with contribution margin, target profit and a chart - free

Overtime pay from your hourly rate or salary under federal or state law, with double time, shift differentials, bonuses and qualified overtime for the No Tax on Overtime deduction - free

Fees and what you receive on PayPal, eBay, Etsy, Stripe, Square, Shopify, Venmo and Cash App - reverse calculator and profit, free

Clock in and out times with lunch breaks for one or two weeks. Total hours, decimal hours and gross pay with federal or California overtime - free, no sign-up

Rise and run, an angle or the building width to roof pitch in x/12, degrees and slope percent, with roof height, rafter length and minimum pitch by roofing material - free

Roof square footage from house size and pitch, squares, shingle bundles or metal panels, and replacement cost by material - free, no sign-up

Estimate a personal injury settlement with the multiplier and per diem methods, apply your state's fault rule, and see what you take home after fees - free

Shorten and manage your URLs

Compare up to 5 keywords from NAVER DataLab: daily/weekly/monthly, device/gender/age, change rate, peak, seasonality, document counts, CSV and share link - free

Categories each gender×age group buys far more than average on NAVER Shopping, plus buyer profiles per category - free

3 years of monthly demand for 2,353 NAVER Shopping categories: when to buy, when to sell. 12-month calendars and buyer profiles - free

Count characters with/without spaces, words, sentences, bytes and reading time as you type. Check Google Ads, Meta, Instagram, X and YouTube limits - free

Auto-collect YouTube comments or paste a list; dedupe, keyword filter, roulette animation, fair random draw - free

Over 400 kaomoji in 23 moods - happy, love, sad, angry, shrug, table flip, cats and bears - one click to copy, free

Preview how a link renders on KakaoTalk, Facebook, X and Slack; validate og:image size and missing tags - free

CPM, ad cost or impressions from the other two, eCPM for publishers, CTR, CPC and CPA, and blended CPM across campaigns - free

JSON-LD for articles, products, local businesses, events, recipes, jobs and more, checked against Google's required properties - free

Add utm_source, utm_medium and utm_campaign to any link, see the GA4 channel it lands in, use ad platform presets and build links in bulk with CSV export - free

Beautify or minify JSON, find errors by line and column, repair single quotes and trailing commas, sort keys and browse a collapsible tree - runs in your browser

Read a JWT's header and payload, see when it expires, verify the signature with a secret or public key and create signed tokens - nothing leaves your browser

Format or minify SQL with uppercase keywords and clean indentation - MySQL, PostgreSQL, SQL Server, Oracle, BigQuery, Snowflake and more, runs in your browser, free

Text to binary, Morse code with sound, hex, ASCII codes and Base64 and back, plus Roman numeral and binary-decimal converters - runs in your browser, free

Pretty print or minify XML, find well-formedness errors by line and column, collapsible tree view, comments and CDATA kept, runs in your browser, free

Compare two tire sizes side by side - diameter, width, sidewall, speedometer error, revolutions per mile and gear ratio, metric and flotation sizes, free

Copy and paste hearts ♥, stars ★, arrows →, check marks ✓, math and currency symbols - Alt codes, Mac shortcuts and HTML codes, free