Top 10 Ways to Convert Picture to HD Quality Online Free

How do you convert a low-resolution JPEG file into a high resolution? ---------------Question from Quora

If you've been asking yourself, How do I convert a picture to a high resolution? Then you're certainly on the right page. Everybody wants to upload a high-quality Facebook or Twitter profile picture with that badass pose. But what do you do if your webcam takes crappy pictures? Hire a professional photographer? Certainly not! The smartest thing is to convert pictures to HD quality using some top-class third-party apps.

• Part 1. General Knowledge About HD Photo
• Part 2. Best Way to Convert Picture to HD You Should Know
• Part 3. Other 9 Ways to Convert Picture to HD Free Online

Part 1. General Knowledge About HD Photo

If you're a pro photo editor, you already know that it's not easy to adjust a photo resolution manually, regardless of the image size. It even gets worse if you want to resize your image to a larger size because the result will be quite blurry. For instance, if a client gives you a small photo of 500 x 500 at 72dpi to resize it to 4000 x 4000 at 300dpi, the result might not be as good as you want.

In short, making a higher definition photo might not be that simple if you don't have the right tools. In most cases, only digital cameras can shoot HD photos at 1920 x 1080 pixels. These photos should fit perfectly on a widescreen like HDTV for full-screen viewing.

Fortunately, you can convert pictures to high-resolution quality easily using a third-party app, as I will show you in this article.

Part 2. Best Way to Convert Picture to HD You Should Know

Let's start by converting pictures to HD quality using the best desktop picture converter, Wondershare UniConverter. With this easy-to-use app, photo editors can adjust the image quality as well as the size. The most powerful feature of this image converter is that it can convert pictures in a batch. Also, it can add effect/watermark, crop, and convert photos to various standard image formats.

Steps to Convert Picture to HD with Wondershare UniConverter:

Step 1 Load your images.

Run Wondershare Image Converter on your desktop, then choose the Tools tab before selecting the Image Converter tool. Now you can begin dropping your image files into the program.

Step 2 Convert pictures to another format to change the image quality.

Option 1: Convert pictures to another format one by one:

Next, click to select the picture you want to change. Click the down arrow beside the Convert all images to: to choose an image format. Then, open the Quality Settings window by clicking the Gear icon beside the Convert all images to the label. You will see a pop-up window that you'll use to adjust the picture quality. You can also enter your preferred pixels manually before hitting the OK button to save your changes.

Option 2: Change the image quality in batch:

If you want to batch process some pictures into a unified format, you can click the Select All on the upper displaying tab. Then click the Convert all images to choose an output format and click on the Gear icon on the top-right corner to choose an output quality.

Step 3 Convert images to HD quality.

Now set the output folder for your HD images and then click the Convert button. It's that easy!

Part 3. Other 9 Ways to Convert Picture to HD Free Online

Besides the Wondershare Image Converter, these free, open-source sites will also convert pictures to HD quality. They are simple-to-use and offer lots of target formats plus other picture editing tools.

1. Online-Convert

Online-Convert offers a plethora of file editing tools. First off, it can encode between many image formats, including SVG, BMP, TIFF, WBMP, PNG, JPG, and more. You can also change the image size, color, pixels, and many more. Other available editing tools include the archive converter, audio converter, video converter, device converter, and more. Sadly, Online-Convert has a few ads and a limited upload size of 100MB.

Pros:

• Plenty of file editing tools.
• It offers several image formats.
• Straightforward interface.

Cons:

• It has a limited upload size.
• Ad-laden interface.

Compared with UniConverter

While Online-Convert offers basic image conversion options, UniConverter provides a more comprehensive set of features, including advanced image editing, batch processing, and a wider range of output formats, resolutions, and quality settings for converting pictures to HD with greater flexibility and customization.

2. Convertio

Some might argue that Convertio is even better than Online-Convert in terms of design and available formats. On this clean, ad-free interface, you'll convert images to SVG, PNG, TIFF, and other 10+ image formats. This tool also offers an audio converter, video converter, font converter, and other essential file editing features. Unfortunately, it doesn't provide additional image editing features apart from conversion service.

Pros:

• Clean ad-free interface.
• It supports several image formats.
• Easy to use.

Cons:

• It has a limited picture upload size of 100MB.
• No picture editing features.

Compared with UniConverter

Convertio is a cloud-based file conversion service with limited image editing options, while UniConverter offers a more powerful and user-friendly desktop software with a wide array of image editing tools, batch processing, and customizable HD output settings for achieving high-quality picture conversion.

3. ConvertImage

ConvertImage is another free online photo editor that offers plenty of tools as well. Here, you'll convert images to other formats, compress pictures, make photo IDs, add watermarks, and many more. The image conversion site is also straightforward to navigate and is available in English, Spanish, or Italian languages.

Pros:

• Easy to use.
• Plenty of photo editing tools.
• Free of charge.

Cons:

• Ad-laden interface.
• It can't convert files offline.

Compared with UniConverter

ConvertImage is a simple online image converter with limited options for converting pictures to HD, while UniConverter provides a more robust and versatile solution with advanced image editing features, batch processing, and customizable HD output settings for superior picture quality.

4. Onlinejpgtools

Onlinejpgtools is a free website for adding quality to your images. It can convert images, add text to images, crop/resize/rotate images, change image quality, and more. Most importantly, it's fast and easy-to-use, unlike many image converters.

Pros:

• It has a clean, straightforward UI.
• Several editing tools.
• Free for all.

Cons:

• It can't convert files offline.
• It is not the best for greenhorns.

Compared with UniConverter

Onlinejpgtools is a web-based image conversion tool with basic features, whereas UniConverter offers a more comprehensive set of image editing and conversion options, including advanced filters, cropping, resizing, and batch processing, for achieving high-quality HD picture conversion.

5. Onlineconvertfree.com

Next is Onlineconvertfree.com, which provides plenty of popular image conversion presets. It can convert PNG to JPG, 7Z to ZIP, RAR to ZIP, MP3 to OGG, and many more. As for editing images, Onlineconvertfree.com can crop, flip, rotate, resize, convert, etc. However, the free version of this app has a maximum picture upload size of 100MB and features several ads.

Pros:

• Easy to use.
• Plenty of editing functions.
• Open-source app.

Cons:

• It has some ads.
• It has a limited upload size.

Compared with UniConverter

Onlineconvertfree.com is a basic online file conversion service with limited image editing capabilities, while UniConverter provides a more advanced and professional solution with a wide range of image editing features, batch processing, and customizable HD output settings for superior picture conversion results.

6. Fixpicture

Fixpicture is a well-designed picture encoding website that supports all popular image formats. From JPG and TIFF to ICO and ICNS, this website converts any image format. Fixpicture can also resize images as well as change the quality to either Good, Better, or Best. However, Fixpicture offers 3MB only.

Pros:

• Simple to understand.
• Several output formats.
• Plenty of editing functions.

Cons:

• Ads on the interface.
• It has a limited upload memory size.

Compared with UniConverter

Fixpicture is a simple online image converter with limited features, whereas UniConverter offers a more powerful and versatile desktop software with advanced image editing options, batch processing, and customizable HD output settings for achieving professional-quality picture conversion.

7. PS2PDF

This new website will transcode your image files to high-quality JPG, PNG, or PDF formats. It can also compress image files to save some device space. Also, PS2PDF has a unique feature that allows you to either turn on or off the Google ads. But on the flip side, this image converter offers a small memory size for uploading photos.

Pros:

• Fast upload.
• Higher compression.
• Easy to use.

Cons:

• Not entirely free.
• Small upload memory size.

Compared with UniConverter

PS2PDF is a tool for converting PostScript files to PDF, and does not focus on image conversion or HD picture quality, unlike UniConverter which provides comprehensive image editing and conversion options, batch processing, and customizable HD output settings for achieving superior picture quality.

8. AConvert

AConvert is a picture conversion app that's popular among most photo editors. It can convert your photos to plenty of image formats like EPS, JPG, PNG, DDS, GIF, and so on. It can also resize, crop, merge, compress, rotate, add effect, and many other essential image editing functions. However, AConvert offers a maximum image file size of 200MB.

Pros:

• Easy to use
• It has an extensive list of supported formats.
• Free of charge.

Cons:

• It has a limited upload size.
• Ad-laden interface.

Compared with UniConverter

AConvert is a basic online file conversion service with limited image editing capabilities, while UniConverter offers a more advanced and feature-rich desktop software with a wide range of image editing options, batch processing, and customizable HD output settings for professional-quality picture conversion.

9. IMGonline

Finally, we have IMGonline, which also features many image editing functions. It can resize images, compress, add effect, improve, and convert. Speaking of conversion, it supports 100+ image formats, including CXF, WEBP, ORF, CALS, and more. The only drawback is the upload limit of 35MB.

Pros:

• Straightforward to use.
• Lots of supported formats.
• It has additional settings.

Cons:

• Small upload size.
• Useless ads on the interface.

As you've seen, these image conversion sites have drawbacks like annoying ads and limited upload memory size. Therefore, I recommend the Wondershare UniConverter if you want unlimited file conversions.

Compared with UniConverter

IMGonline is a web-based image conversion tool with limited features, whereas UniConverter provides a more comprehensive solution with advanced image editing options, batch processing, and customizable HD output settings for achieving high-quality picture conversion.