Complete guide to converting RAW and JPEG (and notes on JPEG XS)

If you work with digital photos daily , sooner or later you'll need to convert between formats: from RAW to JPG, from JPG to an editable format, or even to modern variations. In this guide, you'll find, compiled and explained in detail, the essential information offered by several top-ranked websites on image conversion, along with practical procedures and helpful tips to guide you through the process.

The goal is to consolidate all that scattered content into a single article, with clear explanations, detailed steps, and realistic warnings about limitations, compatibility, and quality. You'll see options for cameras, desktops, and browsers; you'll understand what JPEG can and can't do (for example, with transparency); and you'll have online tools and free programs at your fingertips to cover almost any scenario.

RAW and JPEG: What They Are and Why They Matter

A RAW image is, simply put, what the camera sensor captures unprocessed . That's why it's called "raw": it's not ready to use as is in most apps or platforms. Its size is usually close to the sensor's resolution; for example, a photo taken with a 40-megapixel camera might be around 40 megabytes. The trade-off is its flexibility : since it's not lossy compressed, it allows for greater adjustment of exposure, white balance, and other parameters.

JPEG, meanwhile, is the world's most widespread image compression format due to its balance between quality and size. A JPEG file is around 4–5 times smaller than its RAW equivalent at the same resolution and allows for adjusting the output quality. In typical workflows, this compression results in minimal perceived loss when properly configured, making it a practical choice for sharing and publishing.

Transparency and Formats: What JPEG Can't Do

It's important to understand a detail that's sometimes overlooked: JPEG doesn't support transparency . Unlike PNG or GIF, the JPEG standard doesn't include an alpha channel; therefore, transparent areas are filled with a solid color (often white) when exporting. If you need to preserve transparent areas for web design or other uses, choose PNG or WebP, which do maintain transparency and are widely compatible.

In-camera RAW processing (Nikon example)

Some cameras allow you to create JPEG copies directly from RAW files without using a computer. On Nikon, this process is called RAW Processing and is accessed through the retouching menu. The camera offers several selection modes for choosing which photos to convert and a range of export settings.

The usual selection methods include: choosing specific images , selecting by date, or choosing an entire folder. You can select multiple photos at once; the camera indicates the selection with a dollar sign ($), and you can deselect it by pressing the corresponding button again. To zoom in on the review, use the X button; to confirm the selection, press J; and use the D-pad to navigate through thumbnails and options.

Once you've selected your RAW photos, adjust the output parameters for the JPEG copies. If you want to preserve the image settings as they were when you took the photo, you can choose the "Original" setting. If you're not happy with the result or prefer to postpone the conversion, you can exit without copying. When everything is ready , confirm by pressing EXE and then J to create the JPEG copies.

When processing multiple images, the camera may display a confirmation dialog before starting, with the option to accept (Yes) or cancel. If you change your mind mid-process, press the G button; when the confirmation appears, select Yes and J to stop the operation. This built-in functionality is useful if you don't want to rely on a computer to get quick JPG results.

Desktop tools to convert RAW to JPEG

If you prefer working on a computer, there are free and easy-to-use programs that batch convert files and offer extra controls. Below you'll find three popular options and their essential steps, based on information from well-regarded guides.

Batch Photo: Batch conversion with quality control

Batch Photo is a converter capable of processing many photos at once . After downloading and installing, open the app and import the images by dragging and dropping, or by using the "add folder" option if you've gathered all the photos in one directory. You'll see thumbnails in the interface and a preview when you select each image.

• Quick import: Drag files or go to Add > Folder to upload a whole batch.
• Renaming options: You can customize the output name from the bottom left corner by changing the keyword to be added.
• Destination and format: In Settings, choose the output folder; under Format, select JPG (Joint Photographic Experts Group).
• Quality and size: Adjust the quality with the numeric control; the higher the value, the higher the quality and weight.
• Process: Click Process to start the conversion; the photos will go to the selected folder.

What's interesting about this workflow is that it automates renaming, formatting, and quality in a single step, avoiding manual repetitions when converting many images.

AVS Image Converter: Simple Interface and Extra Settings

AVS Image Converter is another free option with a straightforward interface. Import photos using the Add button , select as many as you need, and load them into the app. Then, choose the JPEG output format. If you wish, you can adjust contrast or other basic parameters in the Effect tab before converting.

• Conversion: Click Convert Now and wait for the process to finish.
• CHECKOUT: Use Open Folder in the final window to review your JPGs.

This program prioritizes ease of use , so it's ideal if you're looking for a quick way to get started without too many menus.

GIMP: Export to JPEG from a Powerful Editor

GIMP, free and open-source, serves as both an editor and converter . Open your RAW file (if your RAW file requires a plugin, install it according to your camera), preview it, and when you're ready to export, go to File > Export. Under File type , choose JPEG, select the destination, and adjust the quality in the export settings. Confirm, and you're done.

In addition to converting, GIMP allows you to make preliminary edits ( cropping with GIMP , color, sharpness) before generating the final JPG, which is useful when you're working photo by photo.

Online converters: fast, free, and no installation required

If you prefer to avoid installations, there are web services that convert files directly from your browser . Below are four common options, along with explanations from their websites and how to use them effectively.

Zamzar: Fast increases and reasonable limit

Zamzar lets you upload a RAW file, select JPG, and convert it in just a few clicks. The maximum free size they mention is 50 MB , so if your RAW file is larger, you might need another option. You can drag and drop the file or use the button to select it; then choose the JPG format and click Convert Now. After the process , the website takes you to a page to download the result.

raw.pics.io: In-browser processing

raw.pics.io stands out for performing manipulations directly in your browser , without uploading the entire image to a server, thus enhancing privacy. It supports a wide range of RAW formats from Canon, Nikon, Sony, Olympus, and Pentax cameras (CR2, NEF, ARW, ORF, PEF, RAF, and DNG, among others), and also converts to JPEG, PNG, and other formats. Furthermore, it allows you to resize and edit JPEGs without leaving the application.

• Access: Enter the app and press Start.
• Import: drag your RAW files or use Open files from computer.
• Export: Using the download icon, choose Save All, select JPG, and adjust the quality, size, pixels, and density.
• Download: When you save, the conversion starts and the browser automatically downloads the files.

Keeping the work on the client side makes the process streamlined and safer for sensitive images, especially when you don't want to upload material to third parties.

CloudConvert: Multiple Sources and Direct Download

CloudConvert lets you upload files from your computer or services like Google Drive and Dropbox . Select the file, click the arrow to choose cloud sources, and once uploaded, click Convert. When finished , download the JPEG and save it to your preferred location.

iLoveIMG: Focused and Hassle-Free Conversion

This online editor specializes in quick image conversions. To convert RAW to JPG, upload your photos from your computer (or drag and drop them into the designated area); it also supports Dropbox and Google Drive. Then, click "Convert to JPG" and, when finished, download the output file. If you need to add more photos , the site offers an option to increase the batch size before converting.

Common interface and messages during online conversion

Many browser-based tools display progress indicators during upload and processing. Typical examples include messages like "Uploading file 0 of 0", time remaining in seconds or upload speeds in MB/s, and statuses such as "Converting to JPG". If the network fails , you'll often see messages like "Oops, there's a problem with the internet connection".

These indicators help estimate how long the process will take and detect bottlenecks. If you notice it's not progressing, check your connection, try a smaller file, or try another tool that operates locally in the browser, such as raw.pics.io, to reduce upload risks.

Converting JPG to RAW: Expectations and Benefits

It's important to clarify that converting from JPG to RAW doesn't recover the information lost during the original JPG compression. Even so, there are services that allow you to transform the container or generate files ready for workflows that require specific formats. Below are three well-known sites and the highlights of each, based on their publications.

Online Convert (image.online-convert.com)

This platform offers conversion of multiple data types (documents, audio, video, and images) without requiring any installation. For images, it offers easy conversion of JPGs to RAW formats , even with a browser extension that speeds up file uploads to the service.

• Advantages: Free to use; can be converted using the web extension.
• Disadvantages: Limited catalog of image output formats; does not support batch conversion in some sections.

PictureResize (pictureresize.org)

Although the name suggests only resizing, it also converts formats and allows batch resizing, something many online services don't offer. They claim compatibility with around 100 image formats, so it covers most everyday use cases.

• Advantages: Conversion to other formats in addition to resizing; wide format support.
• Disadvantages: Focused exclusively on image operations; requires an internet connection to convert.

OnlineConverter (onlineconverter.com/raw-to-jpg)

This site lets you upload an image and get it in another format. In their RAW and JPG section, they offer two useful options : resizing by height/width and adjusting the output quality percentage. They also warn that they don't convert protected or encrypted images , something to keep in mind if you work with restricted material.

• Advantages: Two-step operation and very simple; everything happens in the browser.
• Disadvantages: Sometimes takes a while to load certain images; incompatibility with protected files.

Privacy and cookies on third-party platforms

When you visit online services, you'll often encounter privacy and cookie notices . Messages like "We value your privacy" explain that by accepting all cookies, you help maintain the service, improve its quality, personalize content, and measure advertising; if you reject non-essential cookies, the platform will continue to function with the bare minimum. These notices typically include links to the Cookie Notice and Privacy Policy for more information.

Using raw.pics.io and other apps safely

One of the advantages of raw.pics.io is that it works in the browser and avoids uploading entire images to external servers, thus reducing risks. Other platforms, such as CloudConvert, clearly indicate where they can retrieve your files from (your computer, Google Drive, Dropbox), so you can control permissions. If you're going to use online services, check the limits (for example, 50 MB per file on some websites' free plans) and the data policy.

Practical notes and tips when converting

If you're converting a lot of photos, group them into thematic folders and apply consistent quality settings across batches to maintain consistency. In Batch Photo, take advantage of automatic keyword renaming to organize deliveries and automate exports and versions. In AVS, experiment with contrast adjustments if the RAW file appears flat. In GIMP , export with quality preview to see how the slider affects the final file size.

Online, if your workflow requires transparency, switch to PNG or WebP before continuing to upload; remember that JPEG will cover those areas with a solid color. And if you encounter upload errors, avoid unstable networks or use tools that process locally to minimize connection interruptions.

A note on JPEG XS

Although we've focused on RAW, JPG, and their conversion to JPEG, you might be wondering about JPEG XS . This is a very low-latency compression standard geared towards professional workflows (real-time transport, live production), distinct from traditional photographic JPG. Most of the tools we've looked at are focused on RAW <> JPG and don't offer JPEG XS encoding ; for that purpose, SDKs, plugins, or professional solutions specific to the audiovisual ecosystem are typically used.

To recap: Nikon lets you process RAW files in-camera by selecting images, dates, or folders, adjusting parameters, and confirming with EXE and J; Batch Photo lets you import by folder , rename if needed, choose JPG and quality, and start the process; AVS lets you add files , choose JPEG, and apply effects before converting; GIMP lets you export to JPEG from the menu with quality control and destination options; Zamzar lets you upload RAW files up to 50 MB , choose JPG, and download ; raw.pics.io lets you work in your browser , save everything as JPG, and adjust quality and size; CloudConvert lets you upload from your computer or the cloud , convert, and save; and iLoveIMG lets you upload, convert, and download with minimal steps.

If you need to convert from JPG to RAW formats, platforms like Online Convert facilitate this process, keeping in mind that you won't be able to recover lost data from a JPG. PictureResize adds batch resizing and broad format support, while OnlineConverter incorporates dimension-based resizing and quality adjustment, although it doesn't support protected or encrypted material.

With all of the above in mind, you now have the complete roadmap for converting your photos effectively: you understand what RAW is and why it's so large, what JPEG offers and its limitations regarding transparency, how to create JPGs directly from the camera or using desktop apps, and which online services to use when you're looking for speed without installations. If the need arises to work with JPEG XS in professional environments, you'll have to resort to specific solutions , while for everyday photography, the tools and methods outlined here will allow you to handle virtually any conversion with quality and without headaches.

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What is WebP and how to convert images to JPG or PNG: a complete and updated guide

Isaac

Passionate writer about the world of bytes and technology in general. I love sharing my knowledge through writing, and that's what I'll do on this blog, show you all the most interesting things about gadgets, software, hardware, tech trends, and more. My goal is to help you navigate the digital world in a simple and entertaining way.