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Converted icons look pixelated? How to fix them

Find out why icons look pixelated after conversion, choose a better source and format, and prepare a sharp blog image set without enlarging tiny files.

Sarah CollinsTools and utilities 5 min read

You converted a set of icons for a blog post, but some look jagged or blurry when you place them in the page. Changing the file format usually does not add detail, so the cause is often a small source image, enlargement, or compression that was already present.

Use the Image Converter to create consistent file formats, then check each icon at the size readers will see. These steps help you spot whether conversion caused the problem or simply made an existing limitation easier to notice.

Check the icons before converting the whole set

  1. Open the Image Converter and add a few affected icons as test copies. It can convert up to 50 images at once, but testing a small group first makes it easier to compare results.
  2. Check the pixel dimensions of each original and converted file using your computer's file information view. A file that is 32 by 32 pixels has far less detail than one that is 256 by 256 pixels, regardless of its format.
  3. Convert a copy to the format you plan to use on the blog. For icons with transparent areas, try PNG. Keep a copy of the original, especially if it is a JPEG or another compressed format.
  4. Compare the original and converted versions at 100% zoom, then view them at their intended display size. Avoid judging sharpness only while zoomed far in or out, because the viewer may rescale the image.

For a useful comparison, keep the displayed size and zoom the same. If the converted file has the same pixel dimensions and looks similar at 100%, conversion probably did not create the pixelation.

What the result means

The converted file has the same dimensions and looks the same

The source image likely already contained the jagged edges or blur. A format conversion changes how image data is stored, but it does not recreate details missing from the original. Find a larger source or export the icon again from the design file.

The converted file has fewer pixels

The image was reduced during the workflow, or a smaller version was selected as the source. Convert from the largest clean original you have. If the source is a vector design, export a raster image at the pixel dimensions needed for the blog instead of enlarging a small existing file.

The icon looks blocky after being enlarged

The image is being shown larger than its pixel dimensions can support. For example, enlarging a 32-by-32 icon to 128 by 128 makes each original pixel cover more screen area. Use a larger source or display the icon smaller. Converting the enlarged copy again will not restore the missing edges.

The edges look rough, but the dimensions did not change

This can happen when the original artwork has sharp diagonal lines or when an image viewer scales it to a fractional size. Check the icon at its actual display size in the page layout. If the edges are still rough there, replace the source or export a new version at the final size.

Only JPEG versions look messy

JPEG uses lossy compression, which can create small blocks or halos around sharp edges. Converting that JPEG to PNG prevents another lossy save, but does not remove artifacts already in the image. Return to a clean original and export it to PNG if you need crisp edges or transparency.

How to make the icons look sharp

  1. Start from the cleanest original. Look for the design file or the largest uncompressed image, not a thumbnail copied from a page. A larger source gives you more pixels to work with, but it should still be sharp and free of compression damage.
  2. Match the output size to the page. Decide how wide each icon will appear in the blog layout. Export from the original design at that size, or at a larger size for high-density screens. Do not enlarge a small raster image and expect conversion to add detail.
  3. Choose a format that suits the artwork. Use PNG for icons with transparency, hard edges, or flat colors. JPEG is generally a poor choice for crisp graphics because its compression can blur edges. The Image Converter can convert supported image formats, but it cannot recover details lost in a previous save.
  4. Convert only after choosing the source. Use the converter to create the file type you need from the clean original. Keep the originals untouched so you can make another version without converting an already converted file.
  5. Check the result in the actual layout. Place the converted image in the blog draft and view it at the size readers will see. If it appears fuzzy only at one display size, check whether the page is scaling it to a fractional pixel size. Adjust the displayed dimensions or prepare a size that fits the layout more closely.

Why changing format cannot add resolution

Resolution in a raster image means how many pixels it contains. PNG, JPEG, WEBP, GIF, BMP, ICO, and TIFF are different ways of storing image data, but converting between them does not create the original drawing or extra source pixels. A file can have a larger pixel count after enlargement while still looking soft, because the added pixels are estimated from nearby ones.

If the icon came from vector artwork, such as a logo or illustration made of paths and shapes, export a fresh raster copy from that artwork at the size you need. The Image Converter handles image formats such as PNG and ICO, but it does not turn a small raster icon back into editable vector artwork.

The Image Converter processes image files in your browser, and your files stay on your device.