照片，轻一点。A little lighter.
给照片更合适的
格式与大小。
The right format.
A lighter photo.
转换格式、调整质量、等比缩小。先比较原图与结果，再保存一份适合分享的照片。
Convert formats, adjust quality, and scale down proportionally. Compare the original with your result, then save a photo that is ready to share.
即将上线 · iOS 17 及以上Coming soon · iOS 17 or later
原图
Original
HEIC · INPUT
作为比较依据
Your comparison point
导出副本
Exported copy
JPEG · OUTPUT格式 · 质量 · 尺寸
Format · Quality · Size
01
一次处理，
轻松比较。
One workflow.
A clear comparison.
选择一张照片，或一起处理一组。用熟悉的 iPhone 与 iPad 操作完成格式转换和压缩。
Choose one photo or process a batch. Use familiar iPhone and iPad controls to convert and compress.
格式转换
Convert formats
在 JPEG、PNG、HEIC 与 WebP 之间选择适合用途的输出格式。原图保持不变，保存的是新副本。
Choose JPEG, PNG, HEIC, or WebP for your output. The original stays unchanged; you save a new copy.
JPEG / PNG / HEIC / WebP
质量与尺寸
Quality & dimensions
调整支持有损压缩格式的质量，或按比例缩小尺寸。PNG 保留无损像素编码，降低文件大小可从尺寸入手。导出前查看结果与文件大小。
Adjust quality for formats with lossy compression, or scale dimensions down proportionally. PNG uses lossless pixel encoding; reducing dimensions can help reduce its file size. Inspect the result and file size before export.
透明与静态图片
Transparency & still images
PNG 与 WebP 可保留透明；透明图转 JPEG 时使用白色背景，并在操作前提示。所有输出为 8-bit sRGB 静态 SDR 图片，不保留 HDR 或深度，请比较后再导出。
PNG and WebP can retain transparency. Transparent images receive a white background when converted to JPEG, with a notice before the operation. All outputs are 8-bit sRGB still SDR images, without HDR or depth; compare before exporting.
照片留在设备
Photos stay on your device
照片在本机处理，没有账号、广告或分析 SDK。默认移除输出照片的 GPS；可在设置中调整。系统可能为导入云端相册照片下载原文件。
Photos are processed on your device, without accounts, ads, or analytics SDKs. GPS is removed from output by default and can be adjusted in Settings. The system may download an original when importing a cloud-library photo.
02
先预览，
再决定。
Preview first.
Then decide.
免费下载。免费导入、调整和比较；所有保存、分享与导出，都由同一次永久解锁开启。
Free to download. Import, adjust, and compare for free. One lifetime purchase unlocks all saving, sharing, and exporting.
一次购买，无订阅。
One purchase. No subscription.
永久解锁当前全部导出功能，包括单张与批量处理后的保存、系统分享和文件导出。价格由 Apple 购买页面显示，可使用原购买 Apple 账户恢复权限。
Lifetime access unlocks every current export feature, including saving, system sharing, and file export after single-photo or batch processing. Apple displays the purchase price, and you can restore access with the Apple Account that made the purchase.
即将上线。正式购买通过 App Store 内购完成；TestFlight 购买为沙盒测试，不产生真实扣款。
Coming soon. Production purchases use App Store in-app purchase. TestFlight purchases run in Apple’s sandbox and do not incur real charges.
一次性永久解锁价格。其他国家和地区使用 Apple 当地售价；实际金额与币种以购买页面为准。
One-time lifetime access pricing. Other countries and regions use Apple’s local pricing. The purchase sheet shows the actual amount and currency.
03
用起来，
心里有数。
Clear choices.
At every step.
iPhone 与 iPad，简体中文与英文。引导帮助你了解处理方式、购买范围和照片权限。
For iPhone and iPad, in Simplified Chinese and English. Onboarding explains processing, purchase access, and photo permissions.