Open-and-go online tools
PDF merge & split, image compression, video trimming, JSON formatting… 22 handy tools. No install, no sign-up, no limits. Your files stay in your browser — fully private.
22+
Practical tools
0
File uploads
100%
Free
0
Sign-up needed
📕PDF Tools
Merge PDF
PDF 合并
Combine multiple PDFs into one, in any order
HOT ✂️Split PDF
PDF 分割
Pick pages visually, split or extract any range
📑Organize PDF
PDF 页面整理
Rotate, delete and reorder pages visually
🗜️Compress PDF
PDF 压缩
Shrink PDF size dramatically, keep or redraw pages
🖼️PDF to Image
PDF 转图片
Export each page to HD PNG/JPG, zipped
📄Image to PDF
图片转 PDF
Combine images into one PDF, with A4 layout
🎨Image Tools
Compress Image
图片压缩
Near-lossless, cut size by 50%+
🔁Image Converter
图片格式转换
Convert between PNG/JPG/WEBP/SVG freely
HOT 🖼️Image Crop
图片裁剪
Free or aspect-locked crop, with rotate & flip
HOT 💧Watermark
图片加水印
Text watermark, tiled or positioned, live preview
🧱Image Splice
图片拼接
Stitch images into one, vertical or horizontal
🎬Video Tools
⚙️Text & Dev
JSON Formatter
JSON 格式化
Format, validate, minify, with precise error location
🆚Text Diff
文本对比
Line-by-line diff, additions and deletions at a glance
🔗URL Codec
URL 编解码
Encode/decode URLs, parse query params
🎫JWT Decoder
JWT 解码
Inspect a token's Header and Payload
🆔UUID Generator
UUID/随机码生成
Batch generate UUIDs, random passwords & strings
🔳QR Generator
二维码生成
Live preview QR codes, export in HD
🔐Base64
Base64 编解码
Encode/decode Base64 with full UTF-8 support
⏱️Timestamp
时间戳转换
Unix timestamp ⇄ datetime, bi-directional
Why ChenXi Tools
Privacy first
All computation happens in the browser; contracts, IDs and financial docs are safe to process. The server only ships page code and never touches your data.
Blazing fast
No upload/download waiting — local computation handles files up to a few hundred MB in seconds. Works on phone or desktop.
Truly free
No sign-up, no limits, no gimmicks. No "2 free per day" paywalls — every feature is open to everyone.
FAQ
QAre these tools really free?
Yes. Free, no usage limits, no sign-up. We don't restrict features behind paywalls and keep the pages minimal and distraction-free.
QWill my files be uploaded? Is it safe?
No. All processing happens in your own browser; files never leave your device and our server never touches or stores them. Everything is cleared the moment you close the page.
QDoes it work on mobile?
Yes. Any device with a modern browser works — phone, tablet or desktop — no install needed.
QIs there a file size limit?
No hard limit. Speed depends on your device; common office files (a few hundred MB) process smoothly.