• Introduction to the tool

Image Converter: convert a JPG, PNG, GIF, WebP or TIFF image online

You have an image in JPG, PNG, GIF, WebP or TIFF format and you need to use it in another format? Image Converter from PleaseTools quickly converts an image to another format directly from your browser.

Choose your image, select the desired new format, then retrieve the converted file.

The converter currently supports JPG, JPEG, PNG, GIF, WebP and TIFF formats.

Convert an image online with PleaseTools

Changing an image's format may be necessary when a software, website, or platform does not accept the original format.

With Image Converter, conversion is performed in a few steps:

1. Select your image.
2. Choose the output format.
3. Start the conversion.
4. Download the resulting image.

It is therefore not necessary to install specialized software just to convert an image.

What is an image format?

The image format defines how visual data is encoded and stored in a file.

Two images representing exactly the same photograph can have very different characteristics depending on their format: file size, compression, transparency, quality or compatibility with certain software.

For example:

• a photo can be saved as JPG;
• a logo with a transparent background can be saved as PNG;
• an image intended for the Web can be converted to WebP;
• a simple animation can use GIF;
• an image intended for certain graphic or printing workflows can be kept as TIFF.

The choice of format is therefore not simply changing the file extension.

Renaming an extension does not convert an image

A common mistake is to rename:

photo.jpg

to:

photo.png

This does not actually transform the file.

The extension mainly tells the system and software what type of file to expect. To actually change format, the image data must be decoded then re‑encoded into the target format.

This is precisely the role of an image converter.

JPG or JPEG: ideal for photographs

The JPEG, usually encountered with the extensions .jpg or .jpeg, is a format particularly suited for photographs and images with many color variations.

It uses lossy compression: when the image is heavily compressed, some information is removed to reduce file size.

When to use JPG?

JPG is generally relevant for:

• photographs;
• images coming from a camera;
• photos intended for the Web;
• images where transparency is not required;
• files where a reduced size is important.

JPEG remains one of the most widely supported image formats.

Example

You can convert:

photo.png → photo.jpg

Note however: converting a PNG image to JPG can result in loss of transparency and introduce lossy compression.

PNG: quality and transparency

The PNG (Portable Network Graphics) is especially interesting when you need an image with precise reproduction or a transparent background.

It uses lossless compression and supports alpha transparency.

PNG is particularly suitable for:

• logos;
• screenshots;
• graphical interfaces;
• icons;
• illustrations;
• images requiring transparency.

Example

An image:

logo.jpg

can be converted to:

logo.png

However, converting a JPG to PNG does not recreate information that has already been lost during JPEG compression.

The resulting PNG will indeed be a PNG file, but it will not magically turn a compressed JPEG photograph into an original lossless image.

WebP: a format suited for the Web

The WebP was designed to provide efficient compression while also supporting transparency and animation.

According to MDN documentation, WebP generally offers better compression than JPEG or PNG at comparable visual quality, and today enjoys wide support across modern browsers.

That is why converting a JPG or PNG image to WebP can be interesting for a website.

Example

photo.jpg → photo.webp

or:

image.png → image.webp

The result can be a lighter file, which can help reduce web page weight.

However, distinguish format conversion and image optimization: a conversion does not automatically guarantee a significant size reduction. The result depends on the image and encoding parameters.

GIF: simple images and animations

The GIF (Graphics Interchange Format) is known for its support of animations and for simple images using a limited color palette.

It can be useful for:

• small animations;
• simple images;
• certain historical content or compatible with older systems.

However, GIF is generally not the best choice for converting a richly colored photograph. Converting a photograph to GIF can lead to a significant reduction in the number of colors and lower visual quality.

TIFF: high‑quality images

The TIFF (Tagged Image File Format) is commonly encountered in professional environments related to photography, graphics, scanning and printing.

It can contain high‑quality images, but TIFF files can be much larger than files intended for the Web.

TIFF is also not a format that enjoys native support in modern web browsers, unlike JPEG, PNG or WebP.

It can therefore be useful to convert a TIFF image to a more easily usable format depending on the context.

Which image format to choose?

There is no universally superior format. The choice mainly depends on the intended use.

For the Web, modern formats like WebP and AVIF can offer better performance than historic formats, but their relevance depends on the context and required compatibility.

Most common image conversions

Convert JPG to PNG

The conversion:

JPG → PNG

can be useful when a software or platform requires PNG.

Note: PNG does not retrieve data lost during JPEG compression.

Convert PNG to JPG

The conversion:

PNG → JPG

is very common when seeking a file better suited for a photograph or a platform that requires JPEG.

Transparency caution

JPG does not handle alpha transparency like PNG.

Thus, if your PNG contains a transparent background, converting to JPG requires accounting for this background.

Convert JPG to WebP

The conversion:

JPG → WebP

is particularly interesting for websites.

WebP can provide more efficient compression than JPEG at comparable visual quality.

It is therefore a frequently used conversion in image‑optimization workflows for the Web.

Convert PNG to WebP

The conversion:

PNG → WebP

can be relevant when a PNG image is too heavy for web use.

WebP also supports transparency, making it interesting for certain logos, illustrations and graphics.

Convert WebP to JPG

Some older applications or workflows do not correctly support WebP.

You can then perform:

WebP → JPG

to obtain a more widely compatible JPEG file.

This conversion can, however, result in loss of transparency if the source WebP had any.

Convert WebP to PNG

The conversion:

WebP → PNG

can be useful when a software specifically requires PNG.

It does not, however, recover information lost if the source WebP was already compressed with loss.

Why convert an image?

Image conversion can meet several needs.

1. Compatibility with software

A program may accept PNG but reject WebP, or specifically request a JPG file. Conversion allows the file to be adapted to the software used.

2. Compatibility with a platform

Certain forms, CMSs, social networks or services enforce specific image formats. You can convert your file before uploading.

3. Prepare an image for a website

WebP has become an important format for web images thanks to its compression and features. Converting a JPG or PNG to WebP can therefore be part of an optimization workflow.

4. Reduce image size

Changing format can sometimes produce a smaller file. However, conversion should not be equated with compression. To truly reduce file size, quality and compression settings must also be considered.

5. Adapt an image to older software

Some applications or work environments work better with traditional formats like JPG, PNG or GIF.

Image conversion and quality: what to understand

Converting from one format to another does not guarantee the image will retain exactly the same characteristics.

There are two major categories of compression.

Lossless compression

Lossless compression preserves the information needed for faithful image reconstruction. PNG notably uses lossless compression.

Lossy compression

Lossy compression reduces the amount of data by discarding information considered less important visually. JPEG is a classic example of a format using lossy compression.

Example of successive conversions

Avoid, as much as possible, performing multiple successive lossy conversions:

JPG → JPG → JPG → JPG

Each re‑encoding can further degrade the image.

It is generally preferable to keep a high‑quality source image and generate the various required versions from that source.

Image Converter and Web optimization

For a website, image weight can impact performance.

A very large JPG photograph can sometimes be converted to WebP to obtain a file better suited for web delivery.

However, the format is only one element of optimization.

You also need to consider:

• image dimensions;
• encoding quality;
• compression;
• final file size;
• format suitable for the content;
• browser and user compatibility.

Modern formats like WebP and AVIF are today recommended in many web scenarios, while still taking compatibility needs into account.

Image conversion for developers

Developers regularly encounter image‑format issues.

For example, an application may receive:

photo.jpg

while the storage system or front‑end expects:

photo.webp

In a development workflow, it may be necessary to convert images for:

• a Laravel site;
• a CMS;
• an API;
• a mobile app;
• a desktop app;
• a storage system;
• an image processing pipeline;
• a JavaScript library;
• a thumbnail generation system.

The file format must also match the appropriate MIME type when used on the Web. Common types include image/jpeg, image/png, image/gif and image/webp.

Image Converter or Image Compressor?

These two tools may seem similar, but they address different needs.

Changing format and reducing size are therefore two different operations, even though a conversion can sometimes lead to a smaller file.

Image Converter or Resize Image?

The format and the dimensions of an image are two different properties.

For example:

photo.jpg
1920 × 1080 pixels

You can change its format:

photo.jpg → photo.webp

without necessarily changing its dimensions.

Conversely, you can reduce:

1920 × 1080 → 1280 × 720

without changing the format.

To modify an image's dimensions, use the Resize Image tool from PleaseTools.

How to use Image Converter from PleaseTools?

The converter is intentionally simple to use.

Step 1: select the image

Choose the image you want to convert.

The formats currently indicated by PleaseTools are:

• JPG;
• JPEG;
• PNG;
• GIF;
• WebP;
• TIFF.

Step 2: choose the new format

In the New format field, select the desired format:

• JPG;
• PNG;
• GIF;
• WebP;
• TIFF.

Step 3: download the image

Click Download image to retrieve the converted file.

Practical examples

For a photograph

photo.tiff → photo.jpg

can be relevant when you need a more common and easily shareable file.

For a website

photo.jpg → photo.webp

can be interesting to obtain a format better suited for web delivery.

For an image with transparency

image.jpg → image.png

can be useful if your workflow requires a PNG file.

Note however: converting a JPG to PNG does not create transparency that was not present in the source image.

For an incompatible WebP file

image.webp → image.jpg

can be useful when a software or platform requires JPEG.

Mistakes to avoid when converting an image

Simply renaming the extension

Changing:

image.jpg

to:

image.png

does not suffice. The internal content remains that of the original format.

Systematically converting everything to JPG

JPG is excellent for photographs, but it is not ideal for all images. For a transparent logo or a screenshot, PNG may be more appropriate.

Converting an image multiple times

A chain of lossy conversions can progressively degrade the image. Keep a high‑quality source file whenever possible.

Confusing conversion with compression

Converting:

PNG → JPG

is not exactly the same operation as compressing an image. A conversion changes the format; compression primarily aims to reduce data quantity.

Choosing WebP only because it is modern

WebP is very interesting for the Web, but the best format always depends on context, content and required compatibility.

FAQ on image conversion

How to convert a JPG image to PNG?

Select your JPG file in Image Converter, choose PNG as the new format, then download the converted file.

How to convert a PNG image to JPG?

Select the PNG image, choose JPG as the output format, then start the conversion.

Note: JPG does not retain transparency like PNG.

How to convert a JPG image to WebP?

Upload your JPG in Image Converter, select WebP, then retrieve the generated file.

What is the difference between JPG and PNG?

JPG is particularly suited for photographs and generally uses lossy compression. PNG uses lossless compression and notably supports transparency.

What is the best format for a website?

It depends on the content and context. WebP is today an excellent choice in many cases thanks to its compression and features, while PNG and JPEG remain very widely compatible.

Does converting JPG to PNG improve quality?

No. Converting a JPG to PNG does not recover information that was already lost during JPEG compression.

Are JPG and JPEG files different?

In most common uses, JPG and JPEG refer to the same image format. The extensions .jpg and .jpeg are both used for JPEG files.

Can an image be converted without software?

Yes. An online image converter allows this operation from a browser, without needing to install specialized software.

Why convert an image to WebP?

WebP offers efficient compression and supports transparency and animation. It is therefore particularly interesting for many web uses.

Does conversion always reduce file size?

No. The result depends on the source format, target format, the image and encoding parameters. A conversion can even produce a larger file.

Convert your image in seconds

Do you need to transform a JPG to PNG, a PNG to JPG, a JPG to WebP, a WebP to JPG, or change the format of another compatible image?

Image Converter from PleaseTools lets you perform this conversion easily from your browser.

Choose your image, select the desired format and retrieve your new file.

Try Image Converter for free on PleaseTools.