Does raising DPI improve quality?
No, and it is important to understand why. DPI only tells a printer how large to render the existing pixels. A 500-pixel image labelled 300 DPI still has 500 pixels.
Change the DPI value recorded in an image without touching a single pixel. Print shops and publishers frequently reject images for being "72 DPI" when the pixel dimensions are perfectly adequate; this fixes the metadata they are reading. It is free, needs no account, and adds no watermark to your result.
The DPI field in the image metadata is rewritten to your chosen value. Pixel data and dimensions are left exactly as they were.
Where it stops: DPI is only a printing instruction. Raising it does not add detail. If an image is genuinely too few pixels for the print size, use the upscaler instead.
No, and it is important to understand why. DPI only tells a printer how large to render the existing pixels. A 500-pixel image labelled 300 DPI still has 500 pixels.
Many workflows check the DPI field rather than the pixel dimensions. If your pixel size is adequate, changing the field is the correct fix.
Then you need more pixels. Use the Image Upscaler first, then set the DPI.
Upscale images by 2x or 4x with the bundled local Real-ESRGAN neural super-resolution model for sharper detail and artifact reduction, free with no credits.
Inspect image dimensions, format, EXIF fields, camera data, orientation, DPI and embedded metadata as JSON.
Resize images by pixels or percentage. Maintain aspect ratio and use presets for popular websites and social platforms.
Strip EXIF, GPS and common image metadata while retaining image dimensions and visible content. Choose PNG, JPEG or WebP output.