There are two reasons why your exported image appears pixelated. Either your original artboard size in Illustrator doesn’t match the intended export dimensions (artboard was too small) or your export settings result in a lower quality export.
Scaled content. If you use desktop scaling (or mobile viewport zoom) to scale your layout to fit the browser window, there is a chance that your layout will be scaled larger than originally intended, resulting in images blurred.
Go to File > Export > Export as. Enter a file name and set Format to JPEG. Decide how you want to save your artboards, then click Export to continue. If necessary, change the color model and select the quality on the JPEG Options screen.
With Illustrator’s tracing tool, you can create a vector output of a pixelated image and enlarge it, thereby smoothing out the grainy edges and blurry artifacts. You can then rasterize and export the revised image from Illustrator in its original format or another format.
Click the Edit menu at the top of the program window and choose Sharpen/Blur. Drag the Sharpness slider to the right. The preview image reflects the strength of the sharpening effect. Click the “OK” button to apply the changes.
If you start with a low-resolution image or other file, the resulting PDF may appear blurry or pixelated, especially when printed. PDF converters cannot make your finished document look clearer than the original. Use files with a resolution of at least 72 dpi for web viewing and 200 to 300 dpi for print.
When the Appearance panel appears, click on the effect you want to remove. Then click the Delete Appearance button (2nd from the left at the bottom of the palette)< /b>. Their effect has been removed.