Bezplatný Online Image Resizer — Exact Width and Height in Pixels

Resize any image to exact pixel dimensions with our free online image resizer on XConverters. Enter width and height, lock aspect ratio, choose JPEG PNG or WebP, adjust quality, and download — all zpracováno lokálně ve vašem prohlížeči with transformImage. Bez účtu, bez nahrávání, zcela zdarma.

Co tento nástroj dělá

Images rarely arrive at the exact size a platform requires. Social posts need specific aspect ratios, CMS thumbnails have pixel caps, email signatures want small footprints, and print-adjacent workflows sometimes need precise dimensions. A reliable resizer lets you hit those targets without opening desktop software or trusting a cloud service with your files.

The XConverters resize tool shows your image natural dimensions after upload and lets you type target width and height in pixels. Keep aspect ratio is enabled by default so changing one dimension automatically updates the other — ideal when you know the width a layout needs but want proportions preserved. Turn it off when you need exact non-proportional dimensions for specialized layouts.

An allow upscale toggle controls whether the tool enlarges images beyond their original resolution. Upscale is off by default to avoid blurry enlargements, but you can enable it when you intentionally need a larger canvas. Output format supports JPEG, PNG, and WebP with a posuvník kvality for JPEG and WebP. transformImage handles decoding, scaling, and re-encoding entirely ve vašem prohlížeči.

Because nothing is uploaded, client photos, product shots, and personal images stay on vaše zařízení. XConverters is free with bez registrace, making this resizer suitable for quick one-off edits and repeated daily workflows alike.

Jak používat

Resizing an image on XConverters zabere jen pár kroků:

1. Otevřete Resize Image tool on XConverters — bezplatný přístup bez registrace.
2. Klikněte na Nahrát or drag an image into the drop zone. Common formats like JPG, PNG, and WebP are supported.
3. Note the natural width and height displayed after the file loads.
4. Enter your target width and/or height in pixels. With keep aspect ratio on, updating one field adjusts the other.
5. Toggle allow upscale if you need output larger than the source; leave it off to prevent accidental blur.
6. Vyberte výstupní formát: JPEG, PNG nebo WebP.
7. Adjust the posuvník kvality for JPEG or WebP output to balance size and visual fidelity.
8. Klikněte na Stáhnout to save the resized image with dimensions reflected in the filename.

Decode, scale, and re-encode all happen on vaše zařízení. XConverters does not store your images or require an account.

Klíčové funkce

• Width and height fields in pixels
• Keep aspect ratio toggle (on by default)
• Allow upscale toggle for intentional enlargement
• Output formats: JPEG, PNG, and WebP
• Quality slider for JPEG and WebP
• transformImage engine — lokálně v prohlížeči processing
• Bezplatný unlimited resizing with bez registrace
• Natural dimensions shown on upload for reference

Soukromí a bezpečnost

Vše běží lokálně ve vašem prohlížeči na XConverters. Vaše data se nikdy nenahrávají na naše servery, neukládají do databáze ani nesdílejí s třetími stranami. Nástroj jsme navrhli pro vývojáře, designéry a uživatele, kteří potřebují rychlé výsledky bez obětování soukromí.

Mohou být shromažďovány pouze anonymní analytiky webu pro zlepšení výkonu a použitelnosti. Skutečný text, soubory nebo data, které zpracováváte, při běžném použití neopouštějí vaše zařízení.

Podporované formáty a případy použití

Common reasons to resize images on XConverters:

• Social media: Fit Instagram, LinkedIn, or X cover and post size requirements quickly.
• Website assets: Generate hero images, thumbnails, and card images at exact pixel widths.
• Email signatures: Shrink large photos to lightweight dimensions for corporate email.
• E-commerce: Standardize product image dimensions for marketplace listing templates.
• Documents and slides: Resize screenshots and diagrams before inserting into reports.
• App and game dev: Produce placeholder or sprite sizes for UI mockups and prototypes.

Tipy pro nejlepší výsledky

• Leave allow upscale off unless you deliberately need a larger file — upscaling cannot add real detail.
• Use WebP with quality 80–88 for web images where browsers support it.
• When only one dimension matters, enter it and let keep aspect ratio calculate the other.
• PNG is best when you need lossless output; JPEG when file size is the priority.
• Check the downloaded filename for the final width×height confirmation.

Často kladené otázky

Is this image resizer free? Yes. XConverters offers unlimited resizing at no cost with bez účtu.

Nahrávají se mé obrázky? Ne. transformImage běží zcela ve vašem prohlížeči; soubory nikdy neopouštějí vaše zařízení.

What does keep aspect ratio do? When enabled, changing width automatically updates height (and vice versa) to preserve proportions.

Should I enable allow upscale? Only if you need output larger than the original. Default off prevents blurry enlargements.

Which formats can I export? JPEG, PNG, and WebP. Quality slider applies to JPEG and WebP.

Musím instalovat software? Ne. Stačí moderní prohlížeč na XConverters — zpracování je 100% lokální a zdarma.