svgstack.com

You can cut most images to a fraction of their original file size without any visible quality loss by doing three things in the right order: resize the image to the dimensions it will actually display at, pick the right format for the content, then apply compression at a quality level that survives a side-by-side check. The single biggest mistake is skipping step one — an oversized image compressed at maximum quality is still far heavier than a correctly sized one.

Why file size and quality are a trade-off, not a fixed setting

Every compressed image is a negotiation between three variables: how many pixels you keep, how precisely each pixel is described, and how much the format is allowed to guess.

• Dimensions decide how many pixels exist at all. Halving width and height removes 75% of the pixel data before any compression happens.
• Quality level decides how aggressively the encoder discards detail it thinks you won't notice.
• Format decides the kind of discarding allowed — some formats throw away color precision, others only remove redundancy.

Because these interact, "quality 80" means something different on a 4000px photo than on a 600px thumbnail. Tune dimensions first, then quality.

Pick the format before you touch the quality slider

Practical rule: photos → JPEG or lossy WEBP; flat graphics and transparency → PNG or lossless WEBP; anything vector → SVG.

The four levers, in the order you should pull them

1. Resize to display size (biggest win, zero quality cost)

If your layout renders an image at 800px wide, serving a 2400px original wastes roughly 89% of the pixels. Resize to the largest size it will ever be displayed at, and add a 2× version only if you need retina sharpness.

2. Choose the format

Match the format to the content type using the table above. Converting a photographic PNG to JPEG or WEBP alone can shrink it by 80% or more.

3. Set the quality level

For JPEG and lossy WEBP, most photographs hold up well between quality 70 and 85. Below ~60, banding appears in skies and blur around text. Above ~90, file size climbs steeply for gains nobody can see.

4. Strip metadata

EXIF data, camera info, and embedded thumbnails can add tens of kilobytes. Remove them unless you specifically need copyright or orientation data — and note that stripping orientation can rotate an image, so verify after export.

When lossy compression is fine, and when it isn't

Lossy is acceptable when:

• The image is a photograph or has natural texture.
• It's decorative or below the fold.
• Slight softening won't be noticed at final display size.

Use lossless or vector instead when:

• The image contains text, UI elements, or thin lines (lossy creates ringing artifacts).
• It's a logo, icon, or diagram — SVG or PNG keeps edges clean.
• It will be edited again later; repeated lossy saves compound degradation.
• It's a screenshot of code or a chart where color accuracy matters.

Compressing vs. resizing: don't confuse them

Compressing reduces the bytes needed to describe the same pixels. Resizing reduces the number of pixels. They're independent, and resizing usually delivers the larger saving. A 3000×2000 photo at quality 95 might be 2 MB; the same photo resized to 1200×800 at quality 80 might be 180 KB. Doing only the quality reduction gets you maybe 40% off; doing both gets you over 90%.

A repeatable workflow

1. Determine the maximum display width in your layout (inspect the element or check your CSS).
2. Export at that width (plus a 2× variant if needed).
3. Convert to the right format — WEBP as a modern default, JPEG as a fallback, PNG/SVG for graphics.
4. Apply quality 75–85 for lossy formats and compare against the original.
5. Strip metadata and re-check orientation.
6. Verify before publishing (see below).
7. Serve the right file with srcset so small screens don't download the large variant.

How to verify quality before you publish

• View at 100% at final display size, not zoomed in — artifacts you can't see at real size don't matter.
• Toggle between original and compressed in a viewer or an online compressor's before/after preview.
• Check the worst-case areas: skies, smooth gradients, sharp edges, and any text.
• Compare file sizes and ask whether the extra kilobytes buy visible improvement. If not, go smaller.
• Test on a mid-range phone, where banding and blur are often more obvious than on a desktop monitor.

Common mistakes

• Compressing a full-resolution image and calling it optimized.
• Using PNG for photographs.
• Setting quality to 100 "to be safe" — it inflates size with no visible benefit.
• Re-saving a JPEG repeatedly, stacking artifacts each time.
• Forgetting that GIF animations are usually better as WEBP or video.
• Ignoring metadata, which can silently add weight.

Quick reference

The order matters more than any single setting: resize, then choose format, then tune quality, then strip metadata, then verify at real display size. Follow that sequence and you'll routinely land at 10–20% of the original file size with no quality your visitors can detect.

SVG Stack (svgstack.com) is a free icon and vector download site. It hosts thousands of SVG and PNG icons, logos, and illustrations that you can drop into Figma, Adobe XD, Sketch, Illustrator, or code. If you need ready-made icons for a website, app, UI, or presentation and don't want to draw them yourself, this is the kind of library you'd check first.

What resources are on the site

The library is organized around a few content types:

• Icons — the core offering, browsable by style and by popularity.
• Logos — brand and platform logo sets (Apple, automotive brands, crypto, and more).
• Illustrations — including a people illustration set.
• Icon packs and collections — themed bundles rather than single icons.

Every icon is available in both SVG and PNG, so you can pick vector for scalable design work or raster for quick placement.

Browsing by style

The site groups icons by visual style, which is useful when you need a consistent look across a project. The style categories and their approximate counts:

If you're building a UI, Outline or Filled will cover most needs. Multicolor and 3D suit more decorative or marketing-oriented work.

Collections worth knowing

Beyond individual icons, SVG Stack curates themed collections. Examples listed on the site include:

• Apple iOS Icon Set (150+)
• AI Logos (90+)
• Social Media Icons Pack (80+)
• Automotive Brand Logos (60+)
• Crypto Logos (150+)
• People Illustration Set (80+)
• iOS 26 Liquid Glass Icon Set (30+) and a borderless variant (100+)
• Brand Logos Set (250+)
• Tech & Design Stacks (150+)
• Interface Icon Pack (500+)
• Food Icon Packs (500+)

Collections are the faster route when you need a coherent set rather than one-off icons.

How to find and use icons

1. Search or browse. Use the search bar for a specific term (the site surfaces trending terms like "coconut," "devil," "hospital building," "dna," "voice," "coffee shop"), or browse by style or collection.
2. Pick a format. Choose SVG for design tools and code, PNG for direct raster use.
3. Download. The site describes downloads as free and without restrictions.
4. Place it. SVGs work in Figma, Adobe XD, Sketch, and Illustrator, and can be embedded directly in code.

The site also mentions a request form: you can send icon requests, and it states these are reviewed daily.

What to check before relying on it

• License scope. The site says icons suit personal and commercial projects, but confirm the exact terms on the site before using logos or brand marks in commercial work — brand logos in particular often carry separate trademark considerations.
• Style consistency. With 5,000+ filled icons versus 60+ 3D icons, some styles are far deeper than others. Match your style choice to how many icons you actually need.
• Format fit. SVG scales cleanly and is editable; PNG is fixed-resolution. For responsive UI, SVG is usually the better default.

If you want a starting point, browse the most-downloaded icons to gauge quality, then move to a collection that matches your project's style.

SVG Stack offers its icons in two formats: SVG and PNG. Every icon in the library is available in both, so you can pick the one that fits your workflow rather than being locked into a single export type. The site describes the downloads as free and usable for both personal and commercial projects.

The Two Formats at a Glance

The distinction matters because the two files behave differently once they leave the site.

SVG: The Vector Option

SVG is a vector format, meaning the icon is stored as math-based shapes rather than pixels. That has a few practical consequences:

• Lossless scaling — the same file looks sharp at 16px or 1600px, so you don't need separate exports for different screen sizes.
• Editable — you can recolor, resize, or restructure paths in tools like Figma, Adobe XD, Sketch, and Illustrator, all of which the site names as compatible.
• Code-friendly — SVG can be dropped directly into HTML or a component library, which is why the site mentions dropping icons "straight into Figma, code, or your design system."

If you're building a UI kit or a website where icons need to stay crisp on retina displays, SVG is usually the right pick.

PNG: The Raster Option

PNG is a raster format, so the icon is a fixed grid of pixels. It's the simpler choice when you just need an image file:

• Drop-in ready — works immediately in presentations, documents, and web pages without any editing.
• No tooling required — you don't need a vector editor to use it.
• Fixed resolution — enlarging a PNG beyond its native size will soften the edges, so it's better for one-off placements than for scalable systems.

How to Choose

• Building a product or design system? Take the SVG — it stays sharp and can be recolored to match your palette.
• Adding an icon to a slide deck or a quick mockup? The PNG gets you there faster.
• Unsure? Download both. Since each icon is offered in both formats, there's no cost to grabbing the pair and deciding later.

What the Site Says About Usage

SVG Stack describes its icons as free to download and suitable for personal and commercial projects, with "unlimited" access and no stated restrictions on the downloads. The library is organized by style — Outline (1,500+), Filled (5,000+), Multicolor (1,000+), Hand Drawn (150+), and 3D (60+) — plus curated collections like the Apple iOS Icon Set, AI Logos, Social Media Icons Pack, and Interface Icon Pack. Style doesn't change the format options; each icon is still offered as SVG and PNG.

One thing to verify yourself: the site doesn't publish a license page in the material reviewed here, so if attribution or redistribution terms matter for your project, confirm them on the site before shipping.

Yes. SVG Stack states on its homepage that its icons are free to download, and the site describes access as "unlimited" and "without any restrictions." The same page says the icons are "perfect for both personal and commercial projects." So if your goal is to grab SVG or PNG icons for a personal or client project, the site presents itself as usable for that. The one caveat: the homepage language is marketing copy, not a formal license document, so if you need explicit terms (attribution requirements, redistribution rules, resale limits), check the site's own license or terms page rather than relying on the homepage wording.

What the site says about cost and limits

The homepage makes several claims that answer the free-use question directly:

• Free download — "Our platform offers free download."
• No restrictions — "Access a vast library of icon in both SVG and PNG formats without any restrictions."
• Unlimited — "Unlimited Free SVG Icon Downloads" and "Enjoy unlimited access to high-quality graphics."
• Personal and commercial use — "Perfect for both personal and commercial projects, these icon are ready for download."

No pricing page, subscription tier, or payment platform appears in the site data, and no login or account requirement is mentioned for downloading. That said, absence of a paywall in the copy is not the same as a confirmed no-account policy — treat "no login needed" as unverified until you try a download.

What you can actually download

The site says its vector images "work perfectly with Figma, Adobe XD, Sketch, and Illustrator," and that you can "drop them straight into Figma, code, or your design system."

How to confirm the terms before you rely on them

1. Open svgstack.com and look for a footer link labeled License, Terms, or About — the homepage excerpt doesn't include one, so you may need to scroll or check the site menu.
2. If no license page exists, treat the homepage statement ("personal and commercial projects") as the stated scope and keep a screenshot of it with your project records.
3. For anything high-stakes — client deliverables, products you resell, brand logos — verify attribution and redistribution rules directly, since "free to download" and "free to redistribute" are different permissions.

Practical notes

• The site organizes icons by style (Outline 1,500+, Filled 5,000+, Multicolor 1,000+, Hand Drawn 150+, 3D 60+), so you can filter before downloading rather than browsing everything.
• Curated collections exist too — for example Apple iOS Icon Set (150+), AI Logos (90+), Social Media Icons Pack (80+), Crypto Logos (150+), Brand Logos Set (250+), and Interface Icon Pack (500+).
• If a specific icon is missing, the site says it reviews requests submitted through a short form daily.

Bottom line: SVG Stack presents its icons as free for personal and commercial use with unlimited downloads in SVG and PNG. That's enough to start using them in normal design work. For legal certainty on redistribution or resale, confirm against the site's own license terms, which the homepage copy does not replace.

Yes. SVG Stack provides a request form for users who can't find the icon they need. According to the site, requests are reviewed every day, so it's worth submitting one if you're looking for a specific icon that isn't in the library yet.

How the Request Process Works

The site states: "We review your requests every day. Just let us know your requests by filling out a short form, rest assured that we read and review these requests every day."

That tells you three things:

• There is a dedicated request form (not just a general contact email).
• Submissions are read and reviewed on a daily basis.
• The form is described as short, so you don't need to write a lengthy brief.

What to Include in Your Request

Since the form is short, make every field count. A useful request typically covers:

SVG Stack organizes icons by style, with categories including Outline (1,500+), Filled (5,000+), Multicolor (1,000+), Hand Drawn (150+), and 3D (60+). Naming the style you want keeps your request consistent with the rest of your project.

When Requesting Makes Sense

Submitting a request is most useful when:

• You've searched the library and confirmed the icon doesn't exist.
• You need a specific variation of an existing icon (different style, angle, or detail).
• You're building a set and want matching icons for a niche topic.

If a close match already exists, downloading and adjusting it yourself in Figma, Illustrator, Sketch, or Adobe XD is usually faster than waiting on a new request.

Practical Tips Before You Submit

1. Search first. Try the search bar and browse by style or collection so you don't request something already available.
2. Check the collections. Curated sets like the Interface Icon Pack (500+), Food Icon Packs (500+), or Brand Logos Set (250+) may already cover your topic.
3. Be specific but brief. "Outline icon of a hospital building, for a healthcare app" is more actionable than "need medical icons."
4. Note your format. The site offers both SVG and PNG downloads, so mention if you need one specifically.

What to Expect

The site commits to daily review but doesn't publish a turnaround time for individual requests, and there's no stated guarantee that a requested icon will be created. Treat the form as a way to surface demand — the more clearly you describe the icon, the easier it is for the team to act on it.

If your need is urgent, the safer path is to pick the closest existing icon and customize it, using the request form in parallel for future additions.