Images & Digital Art

Remove simple backgrounds from one image and export a transparent PNG for clean product shots and illustrations.

Add a visible text watermark to JPG, PNG, and WebP images in bulk locally, then export new JPG or PNG copies.

Extract the subject from one photo locally, place it on a simple solid or gradient background, and export a new PNG or JPG copy.

Generate a full favicon bundle from image, text, or emoji: multi-resolution .ico, Apple touch icon, Android Chrome icons, maskable icon, dark-mode SVG, PWA webmanifest, and HTML snippet. Source assets and generated bundles are processed in the current browser and are not uploaded to LittleOne Tools servers.

Split animated GIFs into individual PNG frames in your browser (ZIP batch download, frame-range syntax 1,2,5-9,*, native-speed playback preview), or merge multiple images into a new GIF (per-frame delay 10-20000ms, loop count, palette 2-256 colors, 3 quality tiers). One-click WeChat sticker preset 240×240 ≤100KB, doutu meme preset 300×300. Source GIFs, image frames, and exports are processed in the current browser and are not uploaded to LittleOne Tools servers; no watermark and no login required. Lazy-loads gifuct-js + gifenc codec cores (~19KB gzip) on first interaction. Triple input (drag-drop / file picker / Ctrl+V paste), bilingual, mobile 44px touch + horizontal-scroll frame strip, 4 error categories (invalid-GIF / oversized / OOM / timeout) with aria-live progress. Covers all 4 GIF disposal methods, sub-rect frame offset, transparency, NETSCAPE2.0 loop, interlaced.

Losslessly change DPI metadata for JPG and PNG in your browser: simultaneously writes PNG pHYs, JPEG JFIF, and Exif IFD0 while preserving ICC / EXIF / XMP. Includes 72 / 96 / 150 / 300 / 600 presets plus scenario presets for ID photos, print shops, Taobao main images, and thesis submissions. Input files are not uploaded by the tool.

Convert images to black & white, grayscale, sepia, or threshold in your browser with 11 algorithms, drag before/after slider, and scene presets

One-click split any image into an N×M grid entirely in your browser: built-in presets for Instagram, Xiaohongshu, WeChat Moments, Weibo, Douyin; custom rows/cols from 2×2 to 10×10; long-image strips 1×N / N×1 for triptychs; full control over inner gap, outer padding, background color, corner radius. Output JPEG / PNG / WebP with quality slider, reverse-order naming (for Instagram 9→1 posting workflow) and custom prefix. Download single tiles, multi-selected tiles, or the whole batch as ZIP. Input files are not uploaded, no login, zero watermark; EXIF orientation auto-corrected; first-class 44px touch experience on mobile.

Rotate or flip images in your browser with arbitrary-angle slider, EXIF auto-correct, transparent or custom fill color, undo/redo, batch ZIP download, plus first-class desktop & mobile experience

Round the corners of any image in one click. 4 independent corners with lock-sync toggle, PX / percent units, one-click circle, fully transparent PNG or custom background color, native EXIF auto-correct, checkerboard transparency preview, HDPI super-sampling, drag / paste / click upload, PNG or WebP download, copy-to-clipboard, Web Share save-to-Photos, undo/redo, keyboard shortcuts. In-browser — nothing leaves your device. Bilingual zh/en UI with mobile-first 375px 44px touch

Stitch multiple images into one right in your browser: horizontal join, vertical long-image, and grid presets from 1×2 to 6×6. Supports 4 alignment modes (same-side / cover / contain / stretch), independent outer padding and inner gap, solid or transparent background, global corner radius, optional border, per-cell rotate / flip, HTML5 drag-to-reorder with up/down arrow fallback, 15 social-size presets (RedNote / WeChat / Douyin / Instagram / Twitter / Bilibili / A4 300dpi), PNG / JPEG / WebP export with EXIF auto-strip, Web Share API for direct save-to-album. Local in-browser, bilingual zh/en UI, mobile-first 44px touch.

Add text or graphic watermarks to images with controls for position and opacity.

Turn any text into social posters, quote cards, Xiaohongshu covers, OG share images, Instagram posts / stories, or Pinterest pins. 11 canvas-size presets, 10 font stacks (System / CJK Hei-Song-Kai-Xingkai-Fangsong / Handwriting / Display), size 12–200 with 5 weights + italic, letter-spacing, line-height, L/C/R alignment, horizontal and vertical 竖排 writing, stackable stroke + shadow, solid / 8 gradient palettes / transparent backgrounds, rounded corners + optional border, 8 ready-to-use Looks, PNG / JPG / WebP export with true 2× retina re-render, copy-to-clipboard, download, Web Share save-to-Photos, In-browser — no upload, no login, no watermark, bilingual zh/en UI with 44px mobile touch

Batch resize JPG/PNG/WebP images, convert output format, and control JPEG/WebP quality with one global setting.

Clean one document photo locally with manual corner correction, rotation, and basic enhancement, then export a new JPG or PNG copy.

Batch compress JPG, PNG, and WebP with target percentage, target size, and quality presets.

Drag to crop and resize by pixels or percent, with social and ecommerce presets and JPG, PNG, WebP export.

Batch convert PNG, JPG, and WebP with output quality control, transparency fill, and local downloads.

Convert between HEX, RGB & HSL with live preview

Calculate and simplify image aspect ratios to guide crop and export sizing.

Extract dominant colors and palettes from images for design and brand consistency checks.

Turn photos into pencil, charcoal, ink, or colored-pencil sketches right in your browser with 5 presets, 6 sliders, and uploads are not performed by the tool.

Turn images into retro pixel art in your browser with limited palettes, dithering, and sharp exports. All processing stays local.

Convert any image to ASCII art entirely in your browser: 8 charset presets (including Braille 2×4 high-density, Chinese glyphs by stroke count, Emoji mosaic, and custom charset auto-sorted by ink density), 4 output formats (Plain TXT, colored HTML with merged-span compression, ANSI true-color for terminals, and PNG poster), 6 platform presets (Terminal / GitHub README / Discord / Weibo / WeChat Moments / Emoji poster), 4 input channels (click / drag & drop / Ctrl+V paste / swap image). Floyd-Steinberg / Atkinson / Bayer dithering + Sobel edge detection + explicit aspect-ratio correction + brightness / contrast / invert. EXIF orientation auto-corrected, input files are not uploaded, no login, zero watermark, zero rate limit; first-class 44px touch experience on mobile.

Export SVG graphics to high resolution PNG with configurable size and background.

Convert WebP images to PNG for compatibility with environments lacking WebP support.

Encode one local value into a CODE128 or CODE39 barcode and export it as SVG or PNG.

Read common 1D barcode values via camera or image upload

Generate multiple QR codes at once with batch download

Generate QR codes from text or URLs with size, error correction, foreground, and background controls.

Scan QR codes from camera or image upload, with URL detection, copy, and scan history.

Crop one portrait locally, optionally tidy the background, and export a PNG or JPG profile photo copy

Recrop one image locally for reviewed social media size presets and export a PNG or JPG copy