Does compression reduce quality?

For JPG and WebP, yes — a lower quality setting removes more detail to make a smaller file. At quality 80 or above, most photos look very close to the original. PNG is compressed without losing any quality at all.

Are my files uploaded?

No. Compression happens directly in your browser. Your images are read from your device and are not sent to Stay Local Tools servers for processing.

Can I compress multiple images at once?

Yes. You can choose or drag many images at once, even a mix of JPG, PNG and WebP files. Each one is compressed on its own, and you can download them together as a ZIP file.

Why is PNG compression different?

PNG always keeps every pixel exactly the same — it is a lossless format, so the Quality slider does not apply to it. Some PNG files are already well compressed by the program that created them, so a PNG result can sometimes end up about the same size, or very rarely a little larger, even though nothing about the picture changed.

Does the output format change?

No. A JPG stays a JPG, a PNG stays a PNG, and a WebP stays a WebP. If you want to change the format as well, use one of the convert tools, such as JPG to WebP.

Image Compressor

Make image files smaller and choose the quality.

Local Processing

Files stay on your device.

Choose Files

or drag and drop files here

Supported: JPG, JPEG, PNG, WebP · Best results under 30 MB per file.

Files stay on your device

Private by design

Your files are processed directly in your browser. They are not uploaded to Stay Local Tools servers for processing. Because the work happens on your device, your files stay with you unless you download or share them yourself.

Note: the website itself still loads normal web files, and may use analytics or ads later. The promise here is about the files and text you put into these tools.

How to Use

Press Choose Files and select one or more JPG, PNG or WebP images.
Move the Quality slider to choose how much to compress. 80 is a good starting point.
Press Compress. Your browser does the work, so nothing is sent to a server.
Check the new size and how much space you saved for each image.
Press Download for one image, or Download All to get every image at once.

How compression works here

This tool redraws each image and saves it again using your chosen quality setting. For JPG and WebP, a lower quality removes detail that is hard to notice, which makes the file smaller. PNG is different: it always keeps every pixel exactly the same, so its file size depends on how much repeating detail the image has, not on the quality slider.

Your format is kept

A JPG file stays a JPG, a PNG stays a PNG, and a WebP stays a WebP. This tool only makes the file smaller — it does not change the format. If you also want to change the format, use JPG to WebP, WebP to JPG or PNG to WebP instead.

Choosing a quality

90–100: almost no visible change, with a modest size saving for JPG and WebP.
75–89: a good balance for most photos.
Below 75: the smallest files, with more visible loss of detail.

Why compressing on your own device helps

Your images are read, redrawn and saved again entirely inside your browser, without being sent to a compression service first. Each file stays with you unless you choose to download the smaller copy.

Questions and Answers

: For JPG and WebP, yes — a lower quality setting removes more detail to make a smaller file. At quality 80 or above, most photos look very close to the original. PNG is compressed without losing any quality at all.
: No. Compression happens directly in your browser. Your images are read from your device and are not sent to Stay Local Tools servers for processing.
: Yes. You can choose or drag many images at once, even a mix of JPG, PNG and WebP files. Each one is compressed on its own, and you can download them together as a ZIP file.
: PNG always keeps every pixel exactly the same — it is a lossless format, so the Quality slider does not apply to it. Some PNG files are already well compressed by the program that created them, so a PNG result can sometimes end up about the same size, or very rarely a little larger, even though nothing about the picture changed.
: No. A JPG stays a JPG, a PNG stays a PNG, and a WebP stays a WebP. If you want to change the format as well, use one of the convert tools, such as JPG to WebP.

Other Languages

Español

Comprimir imágenes

Reduce el tamaño de tus imágenes JPG, PNG y WebP eligiendo el nivel de calidad que prefieras. El archivo se procesa directamente en tu navegador y no se sube a los servidores de Stay Local Tools para el procesamiento.

Preguntas frecuentes

: En JPG y WebP sí, una calidad más baja elimina más detalle. Con calidad 80 o más, la mayoría de las fotos se ven casi iguales. El PNG se comprime sin perder nada de calidad.
: No. La compresión ocurre directamente en tu navegador; tus imágenes no se envían a los servidores de Stay Local Tools.
: Sí. Puedes elegir o arrastrar muchas imágenes juntas, incluso mezclando JPG, PNG y WebP, y descargarlas todas juntas en un ZIP.

Português (Brasil)

Comprimir imagem

Reduza o tamanho das suas imagens JPG, PNG e WebP escolhendo o nível de qualidade que preferir. O arquivo é processado diretamente no navegador e não é enviado aos servidores do Stay Local Tools para processamento.

Perguntas frequentes

: Em JPG e WebP sim, uma qualidade menor remove mais detalhes. Com qualidade 80 ou mais, a maioria das fotos fica quase igual. O PNG é comprimido sem perder nenhuma qualidade.
: Não. A compressão acontece diretamente no navegador; suas imagens não são enviadas aos servidores do Stay Local Tools.
: Sim. Você pode escolher ou arrastar várias imagens juntas, até misturando JPG, PNG e WebP, e baixar tudo junto em um ZIP.

한국어

이미지 용량 줄이기

JPG, PNG, WebP 이미지의 용량을 원하는 품질 수준으로 줄일 수 있습니다. 파일은 브라우저에서 직접 처리되며 Stay Local Tools 서버에 업로드되지 않습니다.

자주 묻는 질문

: JPG와 WebP는 품질을 낮추면 세부 정보가 줄어듭니다. 품질 80 이상이면 대부분 원본과 비슷해 보입니다. PNG는 화질 손실 없이 압축됩니다.
: 아니요. 압축은 브라우저에서 직접 이루어지며 이미지는 Stay Local Tools 서버로 전송되지 않습니다.
: 네. JPG, PNG, WebP를 섞어서 여러 장을 한 번에 선택하거나 끌어다 놓을 수 있고, 결과물을 ZIP으로 한 번에 다운로드할 수 있습니다.