免费的 AI 图像工具 – 无需上传，离线使用，100% 隐私
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Image Editing
Conversion & Creation
格式转换器
在 JPEG、PNG、WebP 等格式之间转换图像。
图像尺寸调整器
为 Instagram、Twitter、LinkedIn 等调整图像尺寸。
二维码生成器
在您的浏览器中即时生成和扫描二维码。
水印制作器
添加文本或图像水印以保护您的照片。
图像转 PDF
将一张或多张图像转换为 PDF 文档。
表情包生成器
在您的浏览器中制作表情包--Impact 字体，多面板布局，即时复制或下载。
GIF 制作器
从图像、视频或屏幕录制创建动画 GIF--完全离线。
照片拼贴制作器
使用网格模板或自由布局构建照片拼贴--完全离线。
图像转 SVG
使用类似 potrace 的描边将栅格图像矢量化为可缩放的 SVG。
颜色拾取器
从屏幕或任何图像中拾取颜色--HEX、RGB、HSL、CMYK、命名、Pantone。
Favicon 生成器
从任何图像、文本或表情符号生成所有 Favicon 大小 + ICO 文件 + Web Manifest。
图像转 Base64
将图像编码为 Base64 / Data URI，并将 Base64 解码回图像--即时，在您的浏览器中。
图像元数据查看器
查看任何照片的 EXIF、IPTC、XMP 和 GPS 数据--附带隐私风险摘要。
图像标注器
标注截图--箭头、文本、模糊、高亮、编号步骤、手绘。复制或下载。
文档扫描仪
扫描文档，支持边缘检测、透视校正和多页 PDF 导出--100% 隐私。
ASCII 艺术生成器
将任何图像转换为 ASCII 文本艺术--彩色、单色或 Unicode 块艺术。
图像比较
比较两张图像--滑块、并排、差异、洋葱皮和像素统计。
精灵图生成器
将多个图像合并为精灵图，并为开发者提供 CSS、JSON 和 SCSS 输出。
全景图制作器
将照片拼接成全景图--简单的并排连接或智能重叠拼接。
Text & Code
Word Counter
Count words, characters, sentences, paragraphs, and reading time - with readability scores and keyword density.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and 10+ more formats.
Lorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words - with HTML and Markdown output.
UUID Generator
Generate UUID v4, v1, and v7 identifiers with batch generation, formatting, and validation.
URL Encoder / Decoder
Encode and decode URLs with percent-encoding. Parse URLs into components.
Base64 Text Encoder / Decoder
Encode text to Base64 and decode Base64 back to text. URL-safe mode available.
Text to Binary / Hex / Octal
Convert text to binary, hexadecimal, octal, and decimal - and back.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files.
JSON Formatter / Validator
Format, beautify, minify, and validate JSON with syntax highlighting and tree view.
Random String Generator
Generate cryptographically random strings with strength meter, batch generation, and character set controls.
Developer Tools
Unix Timestamp Converter
Convert Unix timestamps to dates, dates to timestamps, calculate date math, and find timestamp differences.
Text Diff
Compare two texts side-by-side or in unified format with line, word, and character-level highlighting.
HTML Entity Encoder / Decoder
Encode and decode HTML entities. Four encoding modes plus a searchable reference table of 100+ common entities.
CSV ↔ JSON Converter
Convert CSV to JSON and JSON to CSV instantly in your browser.
Markdown Editor
Write and preview Markdown with a live split-pane editor. Export as .md or .html.
Cron Expression Builder
Build, parse, and understand cron expressions visually with live previews and next-run times.
Regex Tester
Test, debug, and explain regular expressions with live matching and capture groups.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates with live clock and date math.
Calculators
Unit Converter
Convert between 100+ units across length, weight, temperature, area, volume, speed, data, time, pressure, and energy.
Percentage Calculator
Calculate percentages: what is X% of Y, X is what % of Y, percentage change, add/subtract percentages.
BMI Calculator
Calculate your Body Mass Index with metric or imperial units and a visual BMI scale.
Age Calculator
Calculate your exact age in years, months, days, weeks, and hours from your date of birth.
Tip Calculator
Calculate tips, split bills, and compare tip percentages at a glance.
CSS & Design
CSS Gradient Generator
Create linear, radial, and conic CSS gradients with a visual editor and presets gallery.
CSS Box Shadow Generator
Create CSS box shadows with visual controls, multiple layers, and Material Design presets.
CSS Border Radius Generator
Generate CSS border-radius with individual corner control and organic blob shapes.
Glassmorphism Generator
Create frosted glass CSS effects with backdrop blur, transparency, and customizable backgrounds.
Neumorphism Generator
Create soft UI / neumorphic CSS effects with light direction, shapes, and component presets.
CSS Text Shadow Generator
Create CSS text shadows with visual controls, multiple layers, and creative presets like neon glow, fire, and retro 3D.
Flexbox Playground
Visually explore CSS Flexbox - tweak container and item properties with a live preview and copy-ready CSS.
CSS Grid Generator
Visually build CSS Grid layouts with drag-and-drop item placement and instant CSS output.
Audio Tools
Audio Trimmer
Trim and cut audio files with waveform editor, fade effects, and multiple output formats.
Audio Converter
Convert audio between MP3, WAV, OGG, FLAC, AAC, and OPUS formats with bitrate and sample rate control.
Audio Merger
Merge multiple audio files into one with reordering, gap control, and crossfade options.
Audio Recorder
Record audio from your microphone with live waveform, pause/resume, and quality controls.
Video to Audio Extractor
Extract audio from any video file. Convert MP4, WebM, MOV to MP3, WAV, FLAC, and more.
Audio Speed Changer
Speed up or slow down audio from 0.25x to 4x with pitch preservation option.
Audio Volume Booster
Boost, reduce, or normalize audio volume with limiter protection against clipping.
Ringtone Maker
Create custom ringtones from any audio file. MP3 for Android, M4R for iPhone.
Vocal Remover
Remove vocals from songs using phase cancellation. Create karaoke and instrumental tracks.
Text to Speech
Convert text to spoken audio using your browser's built-in speech synthesis engine.
Speech to Text
Transcribe spoken words to text in real-time using your browser's speech recognition.
Audio Noise Remover
Remove background noise from audio recordings using noise reduction and high-pass filtering.
Audio Equalizer
Apply 10-band EQ with presets to shape the frequency balance of your audio.
Audio Effects
Add reverb, echo, pitch shift, distortion, chorus, and more to audio files.
Video Tools
Video Trimmer
Trim and cut video files with precise start/end controls and multiple output formats.
Video Merger
Merge multiple video files into one seamlessly.
Video Resizer
Resize, crop, and change the aspect ratio of videos for any platform.
Video Speed Changer
Speed up or slow down videos from 0.25x to 4x with audio pitch preservation.
Video Rotator
Rotate videos 90°, 180° or flip horizontally/vertically.
Video to MP4 Converter
Convert any video format to MP4 (H.264 + AAC) with quality controls.
Add Music to Video
Add background music or voiceover to any video with volume mixing controls.
Mute Video
Remove all audio from a video file instantly without re-encoding.
Video Looper
Loop a video 2x-10x or create boomerang effects.
Reverse Video
Play any video backwards with optional audio reversal.
Video Screenshot
Capture frames from any video as PNG or JPEG images.
Add Subtitles to Video
Burn SRT subtitles into video or type them manually.
Video Watermark
Add image or text watermarks to video with position and opacity controls.
Screen Recorder
Record your screen, window, or browser tab with optional microphone narration.
Webcam Recorder
Record video from your webcam with mirror mode and countdown timer.
Slideshow Maker
Create video slideshows from photos with customizable duration and transitions.
Video Filters
Apply visual filters like brightness, contrast, saturation, grayscale, and sepia to videos.
Architecture
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Network
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工作原理
Choose a tool
Pick from 104 free tools for images, video, audio, text, CSS, and developer tasks.
Drop your file
Drag and drop or select a file. It stays on your device - nothing is uploaded.
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AI and WebAssembly process everything locally. Download your result immediately.
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零隐私风险
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离线工作
首次访问后，所有工具都可以在没有网络连接的情况下运行。
无需账户
无需注册，无需登录，无需电子邮件。打开页面即可开始工作。
永久免费
所有工具完全免费--无使用限制，无水印，无高级套餐。
热门指南
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