BMP 转 JPG 在线转换器

只需 3 步，轻松将您的 BMP 文件转换为 JPG 格式。

JPG⌄

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⚙ 可选设置

Resize

Color Filter

DPI

dpi

Crop (px)

FAQ

常见问题

关于 BMP 转换为 JPG。

这个 BMP 转 JPG 转换器免费吗？

是的，我们的转换器 100% 免费。无需注册，无隐藏费用。

将 BMP 转换为 JPG 需要多长时间？

通过我们强大的云服务器，转换通常只需几秒钟。

我的 BMP 文件安全吗？

是的。您的文件在转换后立即被删除。

最大文件大小是多少？

您可以免费转换最大 400MB 的文件。

我需要安装软件吗？

无需安装。我们的转换器完全在您的网络浏览器中运行。

将 BMP 转换为 JPG

BMP文件非常大——单个1920×1080的未压缩位图约为6 MB。将BMP转换为JPG可将其压缩到不足500 KB，同时保持出色的照片视觉质量。JPG的压缩算法专为连续调图像（如照片）设计，可以实现10:1或更好的压缩比，且几乎没有可察觉的损失。

为什么将 BMP 转换为 JPG？

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分享和上传

网络平台限制文件大小。JPG让您在线分享照片而不会达到上传限制。

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节省存储空间

一个BMP壁纸文件夹在转换为JPG后可以从千兆字节缩小到兆字节。

✉️

电子邮件附件

电子邮件服务限制附件大小。JPG使图像分享对每个收件箱都很实用。

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照片工作流程

JPG是相机的标准导出格式，所有照片查看器都支持。

BMP

文件扩展名.bmp
描述BMP (Bitmap) stores uncompressed bitmap digital images independently of the display device. Large file sizes but no quality loss.
相关程序Microsoft Paint, Adobe Photoshop, GIMP, MS Photo Editor
开发者Microsoft
MIME 类型image/bmp

JPG

文件扩展名.jpg
描述JPEG (Joint Photographic Experts Group) is the most widely used lossy image compression format, ideal for photographs and complex images with many colors. JPEG achieves small file sizes by discarding some image data, making it perfect for web use and sharing.
相关程序Adobe Photoshop, GIMP, Windows Photo Viewer, Preview (Mac)
开发者Joint Photographic Experts Group
MIME 类型image/jpeg

如何将 BMP 转换为 JPG？

只需 3 步，轻松将您的 BMP 文件转换为 JPG 格式。

Step 01

上传您的 BMP 文件

点击「选择文件」或将您的 BMP 图片拖放上传。

Step 02

选择 JPG 作为输出格式

从下拉菜单中选择「JPG」作为所需输出格式。

Step 03

转换文件

点击「立即转换」开始将 BMP 文件转换为 JPG。

Step 04

下载 JPG 文件

转换完成后，下载您已转换的 JPG 文件。

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Tip: 使用85-95%的JPG质量设置可获得与源BMP在视觉上无法区分的照片质量输出。

免费 BMP 转换工具

BMP vs JPG：完整格式指南

功能

BMP

JPG

压缩

BMPNone

JPGLossy

透明度

BMPOnly in 32-bit BMP via BITMAPV4/V5HEADER alpha channel — inconsistently supported by applications

JPGNot supported — transparent areas always render as solid white or the specified matte color

动画

BMPNot supported

JPGNot supported

色彩深度

BMP1-bit monochrome to 32-bit RGBA — most common use is 24-bit (16.7 million colors)

JPG24-bit (8 bits per channel: RGB) — up to 16.7 million colors

文件大小

BMP3 MB – 25 MB per image — a 1920×1080 24-bit BMP is approximately 5.9 MB

JPG50 KB – 5 MB per image depending on resolution and quality setting

浏览器支持

BMPTechnically supported by most browsers but virtually never used on the web due to enormous file sizes

JPGUniversal — all browsers, all operating systems, all devices including IE6 and older smartphones

最适合

BMPLegacy Windows apps

JPGPhotos, web images

常见使用场景：BMP → JPG

📧 Sharing screenshots and captures🌐 Web image publishing💾 Disk space optimization📱 Mobile device sharing📤 Platform and service uploads

⚠️Quality 85–95% maintains visually excellent output while achieving a 12–20× file size reduction. The perceptual quality loss from JPG compression on BMP source data is typically imperceptible at these settings.

BMP

关于 {from} 格式 BMP

BMP (Device-Independent Bitmap) was introduced by Microsoft with the Windows 3.0 SDK in 1990 as the native raster format for Windows. It stores pixel data with zero compression, ensuring perfect reproduction across all hardware. BMP dominated early Windows computing for wallpapers, icons, and application graphics. As the internet grew, its massive file sizes made it impractical for any networked use, displacing it with JPG, PNG, and WebP.

优点

+Zero compression artifacts — the highest possible fidelity for raw storage

+Simple, well-documented format trivial to read/write programmatically

+Universal support across all Windows software and development tools

+Direct pixel data access with no decoding overhead

局限性

−Extremely large files — a 1080p image is ~6 MB vs ~300 KB as JPG

−No practical web use — impractically large for any internet delivery

−Limited support outside Windows ecosystem

−No meaningful advantages over PNG for any modern use case

使用时机

→Legacy Windows applications that exclusively require BMP format

→Automated Windows image processing pipelines as an intermediate format

→System resource files (wallpaper, specific application bitmaps)

→When absolute raw pixel fidelity is needed and file size is irrelevant

提示

•PNG achieves identical lossless quality to BMP at 50–70% smaller file sizes

•Convert to JPG for a 95%+ file size reduction with visually excellent quality

•24-bit BMP and 24-bit PNG are visually identical — PNG is always the better choice

•There are essentially no modern use cases where BMP is preferable to PNG

JPG

关于 {from} 格式 JPG

Standardized in 1992 by the Joint Photographic Experts Group, JPEG became the internet's dominant image format through the 1990s. Its DCT compression made digital photography practical for early web and digital cameras, enabling photo-sharing at a time when dial-up connections made large files impractical. Today it remains the default format for cameras, smartphones, and photo-sharing platforms worldwide.

优点

+Smallest file sizes for photographs (10:1 to 20:1 compression ratio)

+Universal compatibility across every device, software, and platform

+Embeds EXIF metadata (GPS, camera settings, date/time)

+Adjustable quality/size trade-off at save time

局限性

−Lossy — permanently discards image data with every save

−No transparency — backgrounds are always solid

−Visible block artifacts on sharp edges, text, and high-contrast areas

−Quality degrades with each re-save (generational quality loss)

使用时机

→Sharing photographs on social media, email, or blogs

→Camera images where file size matters more than pixel perfection

→Web page photos where page load speed is the priority

→Any context requiring maximum cross-device and software compatibility

提示

•Quality 85–95% delivers the optimal balance between file size and visual quality

•Never re-save a JPG after editing — use PNG or TIFF as your working master file

•Use PNG or WebP for logos, text, and graphics with sharp edges instead

•Strip EXIF metadata before web publishing to trim 5–20 KB per image

为什么选择 DigitalOfficePro？

👤

完全免费

FREE

完全免费的在线服务。无需费用，无需注册，可转换任意多个文件。

🔒

100% 安全

100%

您的文件在转换后立即从我们的服务器自动删除。

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高速转换

< 3s

您的文件通过我们强大的云转换服务器进行转换。

∞

无限制

∞ files

对您可以转换的文件数量没有限制。

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高质量输出

HD quality

我们使用高质量的转换算法，确保转换质量。

🤝

支持 100+ 格式

200+ fmts

我们支持 200 多种文件格式。

支持的输入格式

上传以下任意格式并转换为 JPG、PNG、WEBP、BMP、GIF 或 TIFF。

标准图片

JPGPNGWEBPBMPGIFTIFFHEICPPMWBMP

设计与矢量

PSDAISVGXCFTGAPCX

RAW 相机

ARWCR2CRWDNGNEFORFPEFRAFRAWSR2MRWERFMEF3FRX3F