https://sonkkeutlab.com/en/ Small, honest web tools that run right in your browser en https://sonkkeutlab.com/en/tools/image-ocr/https://sonkkeutlab.com/en/tools/image-ocr/Mon, 05 Oct 2026 09:00:00 +0000Free OCR that runs in your browser: turn photos, screenshots and scanned PDFs into editable text. English and Korean. Nothing is uploaded. https://sonkkeutlab.com/en/tools/id-photo/https://sonkkeutlab.com/en/tools/id-photo/Mon, 05 Oct 2026 09:00:00 +0000Crop a phone photo to official passport and ID sizes (2×2 in, 35×45 mm and more) with a face guide, then get a 4×6 print sheet. Private and free. https://sonkkeutlab.com/en/tools/photo-size-fit/https://sonkkeutlab.com/en/tools/photo-size-fit/Mon, 05 Oct 2026 09:00:00 +0000Make a photo meet upload rules in one step: exact pixel size, maximum KB and JPG format. Presets for US visa photos and 35×45 mm, plus 50–2000 KB targets. https://sonkkeutlab.com/en/tools/auto-redact/https://sonkkeutlab.com/en/tools/auto-redact/Mon, 05 Oct 2026 09:00:00 +0000Automatically find and black out phone numbers, card numbers, emails and ID numbers in photos, screenshots and PDFs. Runs entirely in your browser. https://sonkkeutlab.com/en/tools/pdf-rotate/https://sonkkeutlab.com/en/tools/pdf-rotate/Mon, 05 Oct 2026 09:00:00 +0000Fix sideways or upside-down PDF pages and save them permanently. Rotate single pages or all at once. Lossless, private, free. https://sonkkeutlab.com/en/tools/doc-scanner/https://sonkkeutlab.com/en/tools/doc-scanner/Mon, 05 Oct 2026 09:00:00 +0000Turn phone photos of documents into clean scanned PDFs: perspective correction, shadow-free black & white, multi-page PDF. No app, no upload. https://sonkkeutlab.com/en/tools/pdf-to-text/https://sonkkeutlab.com/en/tools/pdf-to-text/Mon, 05 Oct 2026 09:00:00 +0000Extract all text from a PDF to copy or save as TXT. Page separators and line-joining included. Scanned PDFs are routed to OCR. https://sonkkeutlab.com/en/tools/pdf-page-number/https://sonkkeutlab.com/en/tools/pdf-page-number/Mon, 05 Oct 2026 09:00:00 +0000Number every page of a PDF. Choose position, format and starting number, and skip the cover page. Runs in your browser — nothing is uploaded. https://sonkkeutlab.com/en/tools/pdf-watermark/https://sonkkeutlab.com/en/tools/pdf-watermark/Mon, 05 Oct 2026 09:00:00 +0000Stamp CONFIDENTIAL, COPY, DRAFT or your own text on every page of a PDF. Centered or tiled, any language, adjustable opacity. No upload. https://sonkkeutlab.com/en/tools/image-watermark/https://sonkkeutlab.com/en/tools/image-watermark/Mon, 05 Oct 2026 09:00:00 +0000Add your name, site or shop to many photos at once. Corner, center or tiled anti-theft layout with adjustable size and opacity. No upload. https://sonkkeutlab.com/en/tools/gif-maker/https://sonkkeutlab.com/en/tools/gif-maker/Mon, 05 Oct 2026 09:00:00 +0000Turn a clip of an MP4 into a GIF or animate several images. Control size, frame rate and colors. Runs in your browser, no upload. https://sonkkeutlab.com/en/tools/svg-to-png/https://sonkkeutlab.com/en/tools/svg-to-png/Mon, 05 Oct 2026 09:00:00 +0000Convert SVG icons and logos to crisp PNG (transparent), JPG or WEBP at up to 4096 px. Batch conversion, no upload. https://sonkkeutlab.com/en/tools/image-split/https://sonkkeutlab.com/en/tools/image-split/Mon, 05 Oct 2026 09:00:00 +0000Split one image into an Instagram grid (3, 6 or 9 tiles) or cut a long screenshot into equal-height pieces. Numbered files in a ZIP. https://sonkkeutlab.com/en/tools/remove-white-background/https://sonkkeutlab.com/en/tools/remove-white-background/Mon, 05 Oct 2026 09:00:00 +0000Turn a photo of a signature, stamp or logo on white paper into a clean transparent PNG. Recolor ink and trim margins. Private, free. https://sonkkeutlab.com/en/tools/signature-maker/https://sonkkeutlab.com/en/tools/signature-maker/Mon, 05 Oct 2026 09:00:00 +0000Draw your signature with a mouse, finger or pen, or type it in a handwriting font. Download a trimmed transparent PNG for contracts and PDFs. https://sonkkeutlab.com/en/tools/keyboard-test/https://sonkkeutlab.com/en/tools/keyboard-test/Mon, 05 Oct 2026 09:00:00 +0000Test every key on your keyboard with a live on-screen layout. Shows key codes, simultaneous key count (rollover) and repeat rate. No install. https://sonkkeutlab.com/en/tools/mic-test/https://sonkkeutlab.com/en/tools/mic-test/Mon, 05 Oct 2026 09:00:00 +0000Check your microphone before a call: live level meter and waveform, device picker and 5-second record & playback. Audio is never sent anywhere. https://sonkkeutlab.com/en/tools/webcam-test/https://sonkkeutlab.com/en/tools/webcam-test/Mon, 05 Oct 2026 09:00:00 +0000See if your webcam works, measure real resolution and frame rate, switch cameras, mirror the view and save a snapshot. Video never leaves your device. https://sonkkeutlab.com/en/tools/dead-pixel-test/https://sonkkeutlab.com/en/tools/dead-pixel-test/Mon, 05 Oct 2026 09:00:00 +0000Fill your screen with solid colors to spot dead or stuck pixels, backlight bleed and uneven areas. Full screen, click to change color, no flashing. https://sonkkeutlab.com/en/tools/screen-recorder/https://sonkkeutlab.com/en/tools/screen-recorder/Mon, 05 Oct 2026 09:00:00 +0000Record your screen, a window or a tab right in the browser, with system audio and microphone. No install, no time limit, no watermark, no upload. https://sonkkeutlab.com/en/tools/typing-test/https://sonkkeutlab.com/en/tools/typing-test/Mon, 05 Oct 2026 09:00:00 +0000Type short sentences to measure your words per minute and accuracy. Ten-sentence average and best score. No sign-up. https://sonkkeutlab.com/en/tools/roulette/https://sonkkeutlab.com/en/tools/roulette/Mon, 05 Oct 2026 09:00:00 +0000Type your options and spin a fair random wheel. Weighted options, remove the winner, spin history. Uses cryptographic randomness. https://sonkkeutlab.com/en/tools/random-picker/https://sonkkeutlab.com/en/tools/random-picker/Mon, 05 Oct 2026 09:00:00 +0000Paste a list to pick winners, split into balanced teams, shuffle an order or draw random numbers. Fair cryptographic randomness. Free. https://sonkkeutlab.com/en/tools/online-timer/https://sonkkeutlab.com/en/tools/online-timer/Mon, 05 Oct 2026 09:00:00 +0000Big full-screen countdown timer, stopwatch with laps and a Pomodoro timer. Alarm sound, accurate in background tabs. Free for classrooms and meetings. https://sonkkeutlab.com/en/guides/ai-file-from-logo/https://sonkkeutlab.com/en/guides/ai-file-from-logo/Sun, 04 Oct 2026 09:00:00 +0000Why print shops ask for AI, EPS or SVG files, and how to turn a JPG or PNG logo into a clean vector file when that's all you have. https://sonkkeutlab.com/en/guides/heic-not-opening/https://sonkkeutlab.com/en/guides/heic-not-opening/Sun, 04 Oct 2026 09:00:00 +0000Why iPhone HEIC photos don't open on Windows or upload forms, and three fixes: convert to JPG, add Windows support, or change your iPhone camera setting. https://sonkkeutlab.com/en/guides/jpg-png-webp/https://sonkkeutlab.com/en/guides/jpg-png-webp/Sun, 04 Oct 2026 09:00:00 +0000The real differences between JPG, PNG, WEBP, GIF and SVG, and which to use for photos, logos, screenshots, websites and print. https://sonkkeutlab.com/en/guides/remove-photo-location/https://sonkkeutlab.com/en/guides/remove-photo-location/Sun, 04 Oct 2026 09:00:00 +0000Phone photos can contain GPS coordinates, device model and the exact time taken. Learn what's stored, when it's shared, and how to remove it. https://sonkkeutlab.com/en/guides/loan-repayment-types/https://sonkkeutlab.com/en/guides/loan-repayment-types/Sun, 04 Oct 2026 09:00:00 +0000Compare amortizing (equal payment), equal principal and interest-only loans with a worked example, and learn which suits your situation. https://sonkkeutlab.com/en/guides/strong-password-guide/https://sonkkeutlab.com/en/guides/strong-password-guide/Sun, 04 Oct 2026 09:00:00 +0000How passwords really get cracked, why length beats complexity, memorable random-word passwords, and a realistic way to manage different passwords for every site. https://sonkkeutlab.com/en/tools/image-to-vector/https://sonkkeutlab.com/en/tools/image-to-vector/Sun, 04 Oct 2026 09:00:00 +0000Convert JPG and PNG logos into vector AI files that open in Adobe Illustrator, plus SVG, EPS and PDF. Free, private, runs in your browser — tune colors and detail. https://sonkkeutlab.com/en/tools/image-converter/https://sonkkeutlab.com/en/tools/image-converter/Sun, 04 Oct 2026 09:00:00 +0000Convert PNG to JPG, WEBP to JPG, JPG to PNG and more — many images at once. Free and private: images are converted in your browser. https://sonkkeutlab.com/en/tools/image-compressor/https://sonkkeutlab.com/en/tools/image-compressor/Sun, 04 Oct 2026 09:00:00 +0000Shrink photo file sizes by 60–90% with no visible quality loss. Compress JPG, PNG and WEBP in bulk, privately in your browser. https://sonkkeutlab.com/en/tools/image-resizer/https://sonkkeutlab.com/en/tools/image-resizer/Sun, 04 Oct 2026 09:00:00 +0000Resize photos by percentage or exact width and height. One-click Instagram, YouTube thumbnail and passport sizes. Free, private, in your browser. https://sonkkeutlab.com/en/tools/heic-to-jpg/https://sonkkeutlab.com/en/tools/heic-to-jpg/Sun, 04 Oct 2026 09:00:00 +0000Convert iPhone HEIC photos to JPG or PNG in bulk, right in your browser. Free, no install, no uploads — your photos stay on your device. https://sonkkeutlab.com/en/tools/image-cropper/https://sonkkeutlab.com/en/tools/image-cropper/Sun, 04 Oct 2026 09:00:00 +0000Crop just the part you need with an easy drag box. Lock 1:1, 4:3 or 16:9, or type exact pixels. Paste screenshots directly. Free and private. https://sonkkeutlab.com/en/tools/image-merge/https://sonkkeutlab.com/en/tools/image-merge/Sun, 04 Oct 2026 09:00:00 +0000Combine several photos or screenshots into one image, vertically or horizontally. Match sizes, add gaps and a background color. Free and private. https://sonkkeutlab.com/en/tools/image-rotate/https://sonkkeutlab.com/en/tools/image-rotate/Sun, 04 Oct 2026 09:00:00 +0000Rotate sideways photos 90° or 180° and flip them horizontally or vertically — many at once, free and private. https://sonkkeutlab.com/en/tools/exif-remover/https://sonkkeutlab.com/en/tools/exif-remover/Sun, 04 Oct 2026 09:00:00 +0000Strip hidden GPS location, device model and date from photos before sharing. See what was inside, then download a clean copy. No uploads. https://sonkkeutlab.com/en/tools/image-mosaic/https://sonkkeutlab.com/en/tools/image-mosaic/Sun, 04 Oct 2026 09:00:00 +0000Hide faces, license plates, names and numbers with pixelation, blur or black boxes. Just drag over the area. Your photo is never uploaded. https://sonkkeutlab.com/en/tools/favicon-generator/https://sonkkeutlab.com/en/tools/favicon-generator/Sun, 04 Oct 2026 09:00:00 +0000Create favicon.ico, Apple touch icon and Android icons from your logo or a letter. Get the HTML snippet too. Free, in your browser. https://sonkkeutlab.com/en/tools/image-to-base64/https://sonkkeutlab.com/en/tools/image-to-base64/Sun, 04 Oct 2026 09:00:00 +0000Convert images to Base64 Data URIs, and decode Base64 strings back into image files. Get ready-made HTML img and CSS snippets. https://sonkkeutlab.com/en/tools/image-color-picker/https://sonkkeutlab.com/en/tools/image-color-picker/Sun, 04 Oct 2026 09:00:00 +0000Click anywhere on an image to get its HEX, RGB and HSL code. Automatically extract the main color palette of any photo. https://sonkkeutlab.com/en/tools/pdf-merge/https://sonkkeutlab.com/en/tools/pdf-merge/Sun, 04 Oct 2026 09:00:00 +0000Combine multiple PDF files into one in the order you want. Free PDF merger that runs in your browser — your files are never uploaded. https://sonkkeutlab.com/en/tools/pdf-compress/https://sonkkeutlab.com/en/tools/pdf-compress/Sun, 04 Oct 2026 09:00:00 +0000Reduce the size of scanned and image-heavy PDFs right in your browser. Choose compression strength and grayscale. Your file is never uploaded. https://sonkkeutlab.com/en/tools/pdf-split/https://sonkkeutlab.com/en/tools/pdf-split/Sun, 04 Oct 2026 09:00:00 +0000Extract the pages you need, delete the ones you don't, or split every page into its own PDF. Pick pages from thumbnails and rotate them. Free, no upload. https://sonkkeutlab.com/en/tools/image-to-pdf/https://sonkkeutlab.com/en/tools/image-to-pdf/Sun, 04 Oct 2026 09:00:00 +0000Turn phone photos of documents and scans into a single A4 or Letter PDF. Reorder pages, choose margins and size. Free, private, no upload. https://sonkkeutlab.com/en/tools/pdf-to-image/https://sonkkeutlab.com/en/tools/pdf-to-image/Sun, 04 Oct 2026 09:00:00 +0000Convert every page of a PDF to JPG or PNG. Choose 72, 150 or 300 DPI and page ranges. Free and private — converted in your browser. https://sonkkeutlab.com/en/tools/character-counter/https://sonkkeutlab.com/en/tools/character-counter/Sun, 04 Oct 2026 09:00:00 +0000Count characters with and without spaces, words, sentences, paragraphs and bytes. Set a target length, see reading time, and autosave your draft. Free. https://sonkkeutlab.com/en/tools/text-cleaner/https://sonkkeutlab.com/en/tools/text-cleaner/Sun, 04 Oct 2026 09:00:00 +0000Join broken lines from PDF copy-paste while keeping paragraphs. Remove extra spaces, empty lines, hyphenation and invisible characters. Free text cleaner. https://sonkkeutlab.com/en/tools/case-converter/https://sonkkeutlab.com/en/tools/case-converter/Sun, 04 Oct 2026 09:00:00 +0000Convert text to UPPERCASE, lowercase, Title Case or Sentence case, plus camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE. Free. https://sonkkeutlab.com/en/tools/text-diff/https://sonkkeutlab.com/en/tools/text-diff/Sun, 04 Oct 2026 09:00:00 +0000Paste two texts to highlight additions, deletions and edits by line and by character. Great for contracts, drafts and code. Free and private. https://sonkkeutlab.com/en/tools/line-tools/https://sonkkeutlab.com/en/tools/line-tools/Sun, 04 Oct 2026 09:00:00 +0000Remove duplicate lines, sort alphabetically or numerically, shuffle, add prefixes and suffixes, number lines or join with commas. Free list tool. https://sonkkeutlab.com/en/tools/qr-generator/https://sonkkeutlab.com/en/tools/qr-generator/Sun, 04 Oct 2026 09:00:00 +0000Make QR codes for links, Wi-Fi, phone numbers and contact cards. Custom colors, high-res PNG and SVG. Static codes that never expire and aren't tracked. https://sonkkeutlab.com/en/tools/password-generator/https://sonkkeutlab.com/en/tools/password-generator/Sun, 04 Oct 2026 09:00:00 +0000Generate strong, random passwords with your choice of length and characters, or memorable word-based passwords and number PINs. Uses cryptographic randomness. https://sonkkeutlab.com/en/tools/color-converter/https://sonkkeutlab.com/en/tools/color-converter/Sun, 04 Oct 2026 09:00:00 +0000Convert colors between HEX, RGB, HSL, HSV and CMYK. Get tints and shades and check WCAG text contrast. Free tool for designers and developers. https://sonkkeutlab.com/en/tools/json-formatter/https://sonkkeutlab.com/en/tools/json-formatter/Sun, 04 Oct 2026 09:00:00 +0000Pretty-print messy JSON, minify it, sort keys and find syntax errors with line and column. Free, private JSON formatter and validator. https://sonkkeutlab.com/en/tools/encoder/https://sonkkeutlab.com/en/tools/encoder/Sun, 04 Oct 2026 09:00:00 +0000Encode and decode text as Base64, URL (percent) encoding, HTML entities or Unicode escapes. Full UTF-8 support so non-English text never breaks. https://sonkkeutlab.com/en/tools/timestamp-converter/https://sonkkeutlab.com/en/tools/timestamp-converter/Sun, 04 Oct 2026 09:00:00 +0000Convert Unix timestamps (seconds or milliseconds) to readable dates and back. See local time, UTC and ISO 8601 at once, with a live current timestamp. https://sonkkeutlab.com/en/tools/dday-calculator/https://sonkkeutlab.com/en/tools/dday-calculator/Sun, 04 Oct 2026 09:00:00 +0000Count down to any date, find the number of days between two dates, add or subtract days, weeks or months, and list milestones like the 100th or 1000th day.