QRix
Hit exactly 1920×1080 — the Full HD size wallpapers, presentation slides and video backgrounds expect.
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1920×1080 is the most widely deployed screen resolution in the world, which makes it the default target for desktop wallpapers, YouTube video backgrounds, PowerPoint and Google Slides backdrops, and digital signage. It is a 16:9 frame, so a photo shot on a phone in 4:3 or 3:2 will not map onto it cleanly — something has to give. Fill crops the overflowing edges and guarantees the frame is completely covered, which is what you want for a wallpaper. Fit keeps the entire image visible and pads the leftover space with a colour you pick, which is what you want when nothing in the shot can be cut. Preview the result before downloading, and remember that enlarging a small source to 1080p cannot invent detail that was never captured.
1920×1080 is 16:9. Phone photos are usually 4:3 or 3:2, which is taller, so fill mode trims the top and bottom to cover the frame. Switch to fit if you need every part of the image to survive.
Yes, but upscaling stretches the pixels you already have — it cannot recover detail. Starting from at least 1280px wide gives a noticeably sharper result.
Yes. 1080p refers to 1080 lines of vertical resolution in a 16:9 frame, which is exactly 1920×1080 pixels.
White by default, and you can change it with the colour picker — useful for matching a slide deck or a site background.
No. Resizing runs entirely in your browser with the Canvas API, so the file never leaves your device and nothing is stored or transmitted.
It's free, private and works right in your browser — no signup, no watermark.