A Photopea YouTube thumbnail starts with a file you already have: a PSD template you bought, downloaded or were handed, and no Photoshop to open it. Photopea opens that file in a browser tab, swaps the photo, retypes the words, adds the stroke and exports a flat image, all on your device. As of September 2026, YouTube's Add custom thumbnails page says a thumbnail should be uploaded in image formats such as JPG or PNG, so the PSD is the working file, never the upload.
This post walks the job in order, from the canvas or the PSD to the export, and ends where a template stops being the answer and a thumbnail without Photoshop is better made from a reference and a brief in WThumb. If you would rather start from a template in a browser design tool, the post on Kittl's free plan for thumbnails covers one with a free tier and its limits.
What Photopea is for a thumbnail
This section covers what Photopea is and why it fits a thumbnail job. Photopea is an image editor in a browser tab. Its home page, read in September 2026, says there is no need to install heavy software on your device, that you can enjoy all the premium features without spending a dime, and that Photopea fully supports the PSD format, both opening and saving files. That last line is why a template buyer opens it: the layers, the smart object holding the photo and the type layer holding the words all survive the trip in and back out.
The privacy line matters when the photo is your face. Photopea's learn pages say none of your files ever leaves your computer and that it does not upload any of your files to the internet; the home page puts it as there are no uploads, Photopea runs on your device.
The home page also lists the formats it opens, from PNG, JPG and WebP to raw camera files such as DNG and CR2. It quotes no price, so this post quotes none either. The desktop sibling is GIMP, the installed program for the same job; the GIMP YouTube thumbnail post covers that route. Photopea is the version for a borrowed laptop, a Chromebook, or a designer's file you need to change once.
The canvas, or the PSD
This section covers the two ways a thumbnail job begins in Photopea: a blank canvas at the right size, or a PSD that already has one. As of September 2026, YouTube's Add custom thumbnails page says to have a resolution of 3840 x 2160 pixels for videos and 2160 x 3840 for Shorts, with a minimum width of 640 pixels for videos, and to try for an aspect ratio of 16:9 on videos. Those numbers set the canvas; the YouTube thumbnail size post explains why the shape matters more than the pixels.
A blank canvas
File - New, then type the size. 1920 by 1080 is the practical choice: 16:9, three times the 640 minimum width, half the recommended 3840 by 2160 in each direction. 1280 by 720 is the same shape and also above the minimum. A canvas cannot gain detail it never had, so start no smaller than 1280 wide. For a Short, turn the numbers around: 1080 by 1920.
A PSD template
File - Open is what Photopea's opening and saving page calls the standard way, and the same page says you can open files by dropping them into the Photopea environment. Check the document size before you touch anything: 1280 by 720 or 1920 by 1080 is fine; 640 wide sits on the floor and looks soft on a television.
Inside a PSD template: layers, the smart object, the text
This section covers the part the template buyer needs most: what the Layers panel shows and how to change the photo and the words. A thumbnail template is typically a background, a photo slot, one or two type layers and a few shapes. Each is a decision someone made before you, from the seven in how to make a YouTube thumbnail with any tool.
The smart object holding the photo
The photo slot in a well-built template is a smart object. Photopea's smart objects page, read in September 2026, describes it as a type of a layer linked to a source, and says that once the source is changed, all layers linked to it are automatically updated. Double-click the thumbnail of the smart object; the page says it opens its source as a separate document. Place your photo over the old one in that document. Press File - Save; the page says all smart objects linked to that source will be updated. Close the source tab; your face is in the slot. The same page also says why: a regular layer scaled down and back up loses image information, while a smart object is recalculated from a source that never lost any data. If the template used a plain layer, right-click your photo layer and Convert to Smart Object.
The type layer
The words sit on a type layer. Photopea's text page says to enter one you click on it with the Type tool; select the old words and type yours. Keep the template's weight and size unless the words changed length: I QUIT fits where BEFORE AND AFTER does not. As of September 2026, YouTube's Thumbnail & title tips page says that if you add text, make sure to use a font that's easy to read; a template that arrived with a thin script face is asking to be changed.
Your photo: background off, cut-out in, stroke on
This section takes a photo from the camera to a cut-out with an outline. Photopea's home page, read in September 2026, promises to remove background with one click, and its learn index lists Refine Edge among its selection topics, for the hair line afterward. Run the removal, look at the edge at full size, and fix stray pixels; a halo of old background is what viewers notice at phone size.
The stroke through Layer Style
The white line around a cut-out is a layer style, not a drawing. Photopea's layer styles page says to double-click the layer to see that window, or right-click the layer and choose Blending Options, and names stroke, drop shadow and outer glow among the effects. Tick Stroke, set the color to white, and set the size so it reads as a line at phone size without fuzzing the face; the same page says to click the checkbox of each style to enable or disable it. The white outline cut-out stroke post covers when the line earns its place. A stroke and a shadow together on a small face is two outlines; pick one.
One check before export: click through the template's layers once. A sample photo still visible under yours, or a watermark layer on top, goes to YouTube with your face if you leave it in.
Export: the JPG for YouTube, the PSD for you
This section covers the export, which is two saves, not one. As of September 2026, YouTube's Add custom thumbnails page says a thumbnail should be uploaded in image formats such as JPG or PNG, and sets the size limits at 2 MB for video thumbnails or 10 MB for podcasts from mobile, and 50 MB for video, Shorts and podcast thumbnails from desktop. A PSD is not on that list, so the layered file never goes to YouTube.
Export As, for YouTube
File - Export As, then JPG or PNG. Photopea's opening and saving page says the Save for Web window lets you choose the output format and enter the resolution of the output image; leave it at the canvas size. A high-quality JPG from a 1920 by 1080 canvas usually lands under the 2 MB line; check the file size before a phone upload. PNG keeps text edges crisper and makes a larger file, fine from a desktop. YouTube's Thumbnail & title tips page, read the same month, says thumbnails show up differently across devices, so make sure your thumbnail image is as large as possible.
Save as PSD, for you
Then File - Save as PSD, which the same Photopea page says preserves the whole structure of the document. That is the file you reopen for the next episode: same layers, new photo in the smart object, new words on the type layer, export again. Name it by the series, not the video.
Where Photopea stops and a generator starts
This section draws the honest boundary. Photopea is the right tool when the design exists and the file is in your hands: a PSD from a designer, a template you paid for, last month's thumbnail that needs a new number. Every step above assumes the layout, the type and the colors were decided by whoever built the file. A file built for a face on the left and a product on the right fights a faceless screen-recording channel before the first swap.
When the file is the problem, the fix is not more layers. In WThumb there are no layers to open and no PSD to buy: paste a YouTube link or upload a reference image, type the words and one line of instructions, and about thirty seconds later you have a Full HD+ JPEG. The reference is a brief, not a template. The idea carries over; the design is new: the subject, the energy and the role of each element are kept, and the layout, the framing, the typography and the color treatment are designed fresh. The JPEG sits above YouTube's 640 pixel minimum width and below its 3840 by 2160 recommendation, both cited above, and YouTube re-encodes every upload anyway.
Afterward differs too: in Photopea the file is yours to reopen. There is no PSD from WThumb and no editor, only the JPEG and revisions: press the pencil on a thumbnail and describe a change in plain words, as many times as you like, one credit each (1 credit = 1 thumbnail). On the photo, Photopea keeps it on your device; in WThumb the photo you add travels with the brief, because that is how you are placed in the design. With a file, open Photopea; with only an idea and a reference, the generator is the shorter road.
A brief to paste
- Words. WORTH IT? on the first line, 30 DAYS LATER on the second.
- Instructions. Me on the left at the desk, the lamp lit beside me, the finished room behind, warm evening light, the words top right.
How to do this in WThumb
This section covers the WThumb route for the reader with a reference and no file.
- Paste or upload the reference. Paste a YouTube link (WThumb fetches only that video's public thumbnail) or upload a PNG, JPEG or WebP. A screenshot of a template preview works too: the idea carries over, the design is new.
- Type the words. Up to three lines: WORTH IT? on one, or BEFORE and AFTER on two.
- Write one line of instructions. Plain words: me on the left holding the lamp, the finished room behind me, warm light.
- Add your photo, or leave it out. With a photo, you are placed in the design. Without one, the thumbnail is faceless: the person in the reference is removed and the space filled in the same style. Nobody else's face is ever put in.
- Pick the format and the count. 16:9, 9:16 or both in one submission; one or two designs from the same brief.
- Wait about thirty seconds, then download the JPEG. It is a flat image; open it in Photopea only for a last crop.
The @1 trick for a product shot
A template's product slot becomes an attached image: upload the product photo as @1 (up to four extra images) and write the @1 bottle in my hand, label facing the camera. It is a brief, not a template, so the bottle sits where the new design wants it.
Two designs, then revise
Ask for two designs from the same brief, pick the closer one, and press the pencil on it for the one thing wrong with it: make the words bigger. Each revision costs one credit, and the new version can be revised again. A new account gets two free credits, no card needed; paid plans are on the pricing page.
Photopea for the file you already have; WThumb for the design you do not have yet.
