Free tools

Convert Landscape to Portrait (and Portrait to Landscape)

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To convert a landscape image to portrait, or a portrait image to landscape, you change which side of the picture is the long one. A landscape photo is wider than it is tall, a portrait photo is taller than it is wide, and many uses force one or the other. A phone wallpaper needs portrait, a desktop wallpaper needs landscape, a Reel or TikTok needs portrait, a YouTube thumbnail needs landscape. This guide shows how to convert an image between landscape and portrait, and when to use rotation instead.

In this guide

What image orientation means

Orientation is about the ratio of width to height. A landscape image is wider than it is tall, often something like 16:9 or 4:3. A portrait image is the reverse, taller than it is wide, often 9:16 or 3:4. Same picture content can exist in either orientation, but the framing and the way it fits on a screen change completely between the two.

Changing orientation is one of the most common image conversions, alongside the format conversions covered in our guide to online converters. It is also one of the most misunderstood, because there are two different ways to do it.

Convert landscape to portrait

The landscape to portrait converter takes a wide image and produces a tall one, fit for phone screens, Reels, Stories, and any vertical layout. It changes the canvas itself, not just the rotation, so the result is genuinely a portrait image rather than a landscape image tipped on its side.

This is the right tool when you have a landscape photo and need a portrait version of the same scene, for example a 16:9 photo that has to fit a 9:16 Story frame.

Convert portrait to landscape

The reverse goes the same way. The vertical to horizontal image converter takes a tall image and produces a wide one, fit for desktop backgrounds, YouTube thumbnails, and anything horizontal. Vertical and portrait mean the same thing here, as do horizontal and landscape, the names just come from different traditions.

When to rotate instead of convert

Rotation is different from changing orientation. If a photo is simply turned the wrong way, for example a portrait shot that opens as if it were landscape because the camera saved it sideways, you do not want to convert the canvas, you want to rotate the image by 90 degrees so it looks right.

The rotate image tool handles those quarter-turn fixes, as well as flipping a picture upside down with a 180 degree rotation. Use this when the image content is already in the right orientation but is rotated incorrectly.

What happens to the content

Converting between landscape and portrait genuinely changes the shape of the canvas, so something has to give. Either the picture is cropped, with parts of the frame trimmed off to fit the new shape, or it is fitted with extra space added at the top and bottom, or the sides, to keep the whole picture visible. Both are valid, and the right choice depends on whether the framing or the completeness of the image matters more.

For social platforms that crop aggressively, planning the conversion in advance keeps the important part of the picture in the kept area.

Free orientation tools used in this guide

When you actually need this

Social media is the main reason. Instagram Stories and Reels, TikTok, and YouTube Shorts are vertical, while a landscape photo from a regular camera fits none of them well. The same applies in reverse for YouTube videos, blog headers, and desktop wallpapers, where a portrait phone shot needs reshaping to fit. Print is another reason, since a flyer designed in portrait and a banner designed in landscape demand opposite source images.

Frequently asked questions

What is the difference between landscape and portrait?

Landscape is wider than tall, portrait is taller than wide. Most cameras shoot landscape by default, while phones held upright shoot portrait.

How do I convert a landscape photo to portrait?

A landscape to portrait converter changes the canvas from wide to tall, producing a genuine portrait image rather than a tipped sideways landscape one.

What is the difference between rotating and changing orientation?

Rotating turns the image without changing the canvas shape, which fixes a photo saved the wrong way. Changing orientation reshapes the canvas itself from wide to tall or back.

Will my image lose quality when I change orientation?

The conversion itself does not lose pixel data. Quality loss only comes from cropping, which removes parts of the image, or from saving the result in a lossy format like JPG.

What size is portrait for Instagram Stories?

The standard Stories and Reels ratio is 9:16, often used at 1080 by 1920 pixels. A landscape photo needs converting to that ratio to fit without black bars.

Convert BMP to PNG, JPG, GIF or WebP

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To convert BMP to PNG, JPG, GIF, or WebP, you re-save the image in a format that compresses it, because BMP itself does not. A BMP file stores every pixel in full with no compression, so the same picture that is six megabytes as a BMP can be a small fraction of that in almost any other format. This guide shows how to convert BMP to each common format, and which one to pick for your image.

In this guide

Why BMP files need converting

BMP stores an image as raw pixels with no compression at all. That makes it simple and lossless, but also very large: a full-screen image can run to several megabytes as a BMP while the identical picture is well under a megabyte in a compressed format. Most websites, email systems, and apps either reject BMP files or struggle with their size, which is why converting is almost always the first step. The format itself is covered in our guide to BMP files.

Converting does not change what the image looks like in any meaningful way, it just stores the same picture far more efficiently.

Convert BMP to PNG

PNG is the safest default. It is lossless, so it keeps every detail of the original exactly, while still compressing the file to a fraction of the BMP size. It also supports transparency. The BMP to PNG converter is the right choice for screenshots, logos, diagrams, and anything with sharp edges or text, where you want no quality loss at all.

Convert BMP to JPG

JPG produces the smallest files for photographs. It is lossy, meaning it discards some detail the eye is unlikely to notice in exchange for a much smaller size, and it does not support transparency. The BMP to JPG converter, and the identical BMP to JPEG converter, suit photos and complex images where the small quality trade is worth the smaller file.

Convert BMP to WebP

WebP is the modern format that usually beats both. It compresses smaller than JPG at similar quality and smaller than PNG for the same image, and it supports transparency too. The BMP to WebP converter is the best pick when the image is for the web and you want the smallest file without giving up quality.

Convert BMP to GIF

GIF is limited to 256 colours, so it is not suited to photographs, but it is fine for simple graphics with few colours, and it is the format for short looping animations. The BMP to GIF converter handles that narrower set of cases.

Which format should you choose

Convert toBest forQualityTransparency
PNGScreenshots, logos, text, graphicsLosslessYes
JPGPhotographsLossy, smallest for photosNo
WebPAnything for the webLossy or lossless, smallest overallYes
GIFSimple graphics, animation256 colours onlyLimited

In short: PNG when you want no quality loss, JPG for the smallest photo, WebP for the web, and GIF only for simple or animated graphics.

Free BMP converters used in this guide

Frequently asked questions

What is the best format to convert BMP to?

PNG is the safest default, since it is lossless and much smaller than BMP. Use JPG for the smallest photo files, and WebP for the smallest files on the web.

Why is my BMP file so large?

BMP stores every pixel with no compression, so it is far larger than formats like PNG or JPG that compress the same image.

Does converting BMP to PNG lose quality?

No. PNG is lossless, so converting from BMP keeps every detail of the original while making the file much smaller.

Should I convert BMP to JPG or PNG?

Use JPG for photographs where the smallest file matters, and PNG for screenshots, text, or graphics where you want no quality loss and possibly transparency.

Is BMP to JPEG the same as BMP to JPG?

Yes. JPG and JPEG are two names for the same format, so the two converters produce the same result.

Convert Base64 to Image or PDF

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To convert Base64 to an image, you decode the text back into the picture it was made from. Base64 is a way of writing binary data, like a photo or an icon, as plain text so it can travel inside HTML, CSS, JSON, or an email. That text looks like a long random string, but it is a complete image waiting to be turned back. This guide shows how to convert Base64 to an image or a PDF, and what to do when the string will not decode.

In this guide

Why files become Base64

Many systems only handle plain text safely. Email bodies, JSON payloads, and the data URLs embedded in web pages were all built around text, and raw binary sent through them can be corrupted. Base64 solves that by rewriting the binary file as text characters, so an image can be carried inside a line of CSS or a JSON field. The trade-off is size, since Base64 text is about a third larger than the original, and that it is unreadable until decoded. The full background is in our guide to Base64 encoding.

When you receive data in that form, you need to reverse it, and that is exactly what these converters do.

Convert Base64 to an image

The Base64 to image converter takes a Base64 string and rebuilds the original picture, which you can then view or save as a normal file. It handles the common formats, so a string that started as a PNG comes back as a PNG and a JPEG comes back as a JPEG. You paste the string, and the image appears.

If your data is specifically a WebP image, the Base64 to WebP converter rebuilds it in that format directly.

Preview a Base64 image

Sometimes you only need to see what a Base64 string contains, not save it. The Base64 image preview tool renders the image straight from the string so you can check it at a glance. This is handy when you are debugging and have a long encoded value but no idea what picture is hiding inside it.

Convert Base64 to PDF

Images are not the only files encoded this way. Documents are often carried as Base64 inside API responses and stored data. The Base64 to PDF converter decodes the string back into a working PDF you can open and save, the same idea as the image converter applied to documents.

When the string will not decode

If a converter rejects your string, the cause is usually one of two things. The first is the data URL prefix. A Base64 image copied from a web page often starts with something like data:image/png;base64, before the actual data. That prefix is not part of the Base64 itself, and some tools want only the part after the comma.

The second is a broken or incomplete string, where characters were lost in copying or the padding equals signs at the end were cut off. A quick way to sanity-check what you have: a Base64 PNG begins with the characters iVBOR, and a Base64 JPEG begins with /9j/. If yours starts with one of those, the data is probably intact and the prefix is the thing to remove.

Free Base64 converters used in this guide

Frequently asked questions

How do I convert a Base64 string to an image?

Paste the string into a Base64 to image converter. It decodes the text back into the original picture, which you can then view or save as a file.

What does the data:image prefix mean?

It is a data URL prefix that marks the string as an embedded image. It is not part of the Base64 data, and some converters want only the part after the comma.

Can I tell what format a Base64 image is?

Often yes. A Base64 PNG starts with the characters iVBOR, and a Base64 JPEG starts with /9j/, which gives away the format before you decode it.

Why is my Base64 string larger than the original file?

Base64 represents three bytes of data as four text characters, so the encoded text is about a third larger than the file it came from.

Can I convert Base64 back to a PDF?

Yes. A Base64 to PDF converter decodes the string into a working PDF document you can open and save.

Free Online Converters: The Complete Guide

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Free online converters do one job well: they take data in one format and hand it back in another. Convert a binary string into readable text, a BMP photo into a PNG, a Base64 blob into an image, a column of JSON into a CSV row. Each is a small, exact task that is slow and error-prone by hand and instant with the right tool. This guide is a map of the converters on this site, grouped by what they convert, so you can find the one you need and understand what it actually does.

In this guide

What an online converter does

A converter reads data in a source format and writes it out in a target format, without changing the underlying meaning. The number stays the same number, the image stays the same image, only the way it is written changes. That sounds simple, but every format has its own rules, and applying them by hand is where mistakes creep in.

The converters here all run in your browser. The data is processed on your own device and is not uploaded to a server, which matters when you are converting something private. None of them need an account, and there is no install. You paste or upload, you get the result.

Number system converters

Number system converters move a value between binary, decimal, hexadecimal, and octal. These are the most searched conversions in computing, because programmers meet all four systems daily. The binary to decimal converter turns a binary string into the everyday numbers people read, and the binary to hex converter packs it into the compact hex form used for colours and memory.

The binary to octal converter handles the base-8 form still used in Unix file permissions. The full set lives in the binary tools category and the number tools category.

Text and character converters

Text converters move between human-readable characters and the codes a computer stores them as. The binary to text converter turns a binary string back into words, and the text to binary converter does the reverse, which is the pair people search for most.

From there the character converters fan out. The ASCII to hex converter shows text as hex character codes, and for something different, the text to Morse code converter turns a message into dots and dashes. These and more sit in the text tools category.

Base64 and data converters

Base64 is the format that lets binary data travel as plain text, so converting to and from it is a constant need. The Base64 to image converter turns a Base64 string back into a viewable picture, and the Base64 to PDF converter does the same for documents.

For structured data, the Base64 to JSON converter decodes an encoded payload back into readable JSON, the form it usually started as before it was wrapped for transport.

Image format converters

Image converters change a picture from one file format to another while keeping the image itself unchanged. The strongest set here is built around BMP, the large uncompressed format that almost always needs converting to something smaller before sharing.

The BMP to PNG converter produces a lossless, much smaller file, and the BMP to JPG converter produces an even smaller one for photos where some quality loss is fine. The wider set is in the image tools category.

Data format converters

Data converters reshape structured data between the formats applications expect. The BSON to JSON converter turns the binary form used by databases such as MongoDB into readable JSON, and the CSV delimiter converter swaps the separator in a CSV file, the usual fix when a file made with semicolons will not open correctly. These live in the JSON tools category and the CSV tools category.

Choosing the right converter

Two questions point you to the right tool. First, what do you have, and what do you need it to become? That is the source and target pair, and it names the converter directly: a BMP you need as a PNG means the BMP to PNG converter. Second, does the conversion lose anything? Some conversions are lossless and reversible, such as binary to decimal. Others, like converting a photo to JPG, trade a little quality for a smaller file. Knowing which kind you are doing tells you whether you can convert back later without harm.

Popular free converters

Frequently asked questions

Are these converters free?

Yes. Every converter on the site is free, runs in your browser, and needs no account. The data is processed on your own device.

Is my data uploaded when I convert it?

No. The converters process data in your browser, so the file or text stays on your device rather than being sent to a server.

What is the difference between a lossless and a lossy conversion?

A lossless conversion keeps all the original data and can be reversed exactly, such as binary to decimal. A lossy conversion drops some detail for a smaller file, such as converting a photo to JPG.

Why will my CSV not open correctly?

It most likely uses a different separator than your software expects, often a semicolon instead of a comma. A CSV delimiter converter fixes it.

Can I convert a Base64 string back into a file?

Yes. A Base64 to image or Base64 to PDF converter decodes the string back into the original file you can view or save.