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Agencies by service

Conversion rate optimisation ecommerce agencies.

Agencies whose own sites describe conversion rate optimisation work, each listed with the client brands it names, the platforms it works on, its offices and team size. Filter by client evidence, specialism, service, location and team size. Paying for a listing does not change the order.

agencies
594
name at least one client
464
have a corroborated client
92
client brands named
5,323
countries with an office
19
Agency sites last read
September 2026

101 Conversion rate optimisation ecommerce agencies match your filters

Showing 1 to 25 of 101, ordered by most named clients

How results are ordered

By the number of client brands each agency names on its own site, then by how many of those we corroborated. That number reflects how much of its portfolio an agency publishes and how much our crawler could read. It is not a quality rating.

Sponsored listings appear in a separate, labelled block and never change this order.

  1. Barrel

    New York, US

    • Matches: Conversion rate optimisation
    • Shopify
    • Shopify Plus
    • WooCommerce
    • Headless commerce
    • Beauty and skincare
    • +9

    From their site Your website is where your brand's story comes to life—a hub for customers to learn, discover, and experience.

    Team
    51 to 200
    Founded
    2012
    Offices
    2

    Named clients78 35 corroborated

    +74 more clients

    goodwipes ✓, Oishii ✓, Pavise ✓, BHU Foods ✓, McCormick & Company ✓, Della Home ✓, Anthony's Goods ✓, Hurom ✓, Legendairy Milk ✓, Real Good Foods ✓, Tiege Hanley ✓, Kite Hill ✓, OneSkin ✓, Roti ✓, Fire Dept. Coffee ✓, Wamsutta ✓, Secret Nature ✓, Fekkai ✓, Joovv ✓, The Outset ✓, Milton's ✓, BLANK Beauty ✓, The Nue Co ✓, Llama Naturals ✓, Austin Eastciders ✓, Caffe Vita ✓, Thinsters ✓, Bastide ✓, Ancient Foods ✓, BraveFace ✓, SmartyPants Vitamins ✓, Cabot Creamery, Frank's RedHot, Dr. Jart+, Happy Head, HALO, Teremana, Relief Factor, Vermont Smoke & Cure, Cholula, Sakara, Stiller's Soda, Bobo's, ParmCrisps, Kind Snacks, Smarty Pants Vitamins, HALO, OneSkin, Kite Hill, 818, Khloud, Grazly, BLANK Beauty Corporate, Mush, Willow, L'Oreal Paris, Cabot Creamery, Hu, Once Upon a Farm, Zatarain's and 14 more

  2. Eastside Co

    London, UK · also New York, Austin +13

    • Matches: Conversion rate optimisation
    • Shopify
    • Shopify Plus
    • WooCommerce
    • Fashion and apparel
    • Beauty and skincare
    • +8

    From their site Award winning agency specialising in Shopify Plus design, development and ecommerce marketing solutions for global brands

    Team
    51 to 200
    Offices
    17

    Named clients56 6 corroborated

    +52 more clients

    Route One ✓, Spectrum Collections ✓, DJI, UFC Collectibles, Cutler and Gross, REN Skincare, Coffee Angel, Hadoro Paris, Kate's Kitchen, MG, Olivia May, JLingz, Dessert Steel, Gold Collagen, Zipvit, Desert Steel, DJI Hasselblad, Route One, Olivia May, Condor, Sneak Energy, Wild Deo, TRENDYGOLF, what3words, Voyado, Solar Scooters, Raging Bull, MobilityPlus, Mimi and Lula, Holland Cooper, Absolute Collagen, Hera, Purish, Twenty, Origin Coffee, Oliver Sweeney, Lazy Oaf, SHOWstudio, Klarna, Carex, Tropic Skincare, Pure Scooters, Scandibørn, Tatty Devine, Patrick Mavros, Hearts of London, Trojan, British Red Cross, Motel Rocks, Trunk, Route One, Starpowa

  3. magic42

    Birmingham, UK · also Austin, Leeds +4

    • Matches: Conversion rate optimisation
    • Shopify
    • Amazon
    • Shopify Plus
    • Adobe Commerce (Magento)
    • WooCommerce
    • +9

    From their site The eCommerce Development Agency Born from Retail

    Founded
    2018
    Offices
    8

    Named clients49

    +45 more clients

    Springpack, Canonbury Products, Alan Paine, Stone Computers, Jaytees, Roger Clark Motorsport, BoxMart, Doorfit, BioCare, Aqua i, Whisper Pumps, Nobisco, SD Products, Buy Sheds Direct, Jenvey, Bristol Maid, British Gymnastics, Motaclan, Pump Sales Direct, The Handcrafted Card Company, Ifancyone, Haws Watering Cans, Webbs Electricals, Mobile Fun, Aimont, Medik8, Scott+Sargeant, Studiospares, Stone Group, Cotterill Civils, Love Cases, Love Orchids, SparesPRO, Packt, Pavilion Broadway, Thomas Dudley, Bulldog Appliances, Berry Flirt, Nanogen, Vinotopia, Azio Beauty, 1st MX, Feel Good Matters, Oak Furniture King, USN

  4. The Chicago Web Co

    Chicago, US

    • Matches: Conversion rate optimisation
    • Shopify
    • Shopify Plus
    • WooCommerce
    • Fashion and apparel
    • Beauty and skincare
    • +4

    From their site We design cutting-edge Shopify experiences that transform your store, elevate your brand, and drive lasting growth.

    Team
    1 to 10
    Founded
    2013

    Named clients46 18 corroborated

    +42 more clients

    Trees for the Holy Land ✓, Essations PRO ✓, Essations ✓, My Sacred Spine ✓, OSTRIM ✓, BUTI Yoga ✓, Oui the People ✓, Sugar River Shoppe ✓, Sonia Roselli Beauty ✓, Primm's ✓, Lindsay Manfredi ✓, Cliff & Pebble ✓, Gitzell Fairtrade ✓, Gaucha Family Coffee Farm ✓, Hugo Boss, Stan's Donuts, Fire Dept Coffee, Gigawatt Coffee Roasters, Calvin Klein, Elite Team, Beate Chelette, Market St. Creative, A Simple Cake, Exotic Joe Coffee, LoveShackFancy, Arizona Iced Tea, Enjoy Life, Mustard Museum, Boomerang Bites, Solely Jane, Killer Pecans, Shop AIP, Harvest Green Mattress, Brummell Co, Dollop Gourmet, Late Night Dreamers, Deiter's Chocolates, Pool Six Coffee Roasters, Purely Amazing Flour, Hamilton Publishing, Wellthee Living, Sierra Moon

  5. Brandography

    Minneapolis, US

    • Matches: Conversion rate optimisation
    • Shopify
    • Amazon
    • Shopify Plus
    • Adobe Commerce (Magento)
    • Food and drink
    • +1

    From their site Digital Marketing That Helps You Go Beyond The Expected.

    Offices
    2

    Named clients43

    +39 more clients

    Levi's, Owlet, JBDB, R.F. Moeller Jeweler, Best Care, Molekule, Zirc Dental, Malteurop, SmartVest, Pappy Company, Northern Brewer, Metro Meals on Wheels, Honeywell Home, Meshbesher, Forge & Flame, Peach Truck, First Alert, Goff Public, Utepils Brewing, ACP, TrueShot, Embroidery Library, Barf World, Carlson's, Earl Giles, CIVCO, Via Coquina, Mel's Outdoors, Wild Hare, Good Measure, GiftWorksPlus, Qualification Targets, ESI Engineering, Jostens, Insignia, MarCor, TCI Capital, Bad Weather Brewing, Focus Financial

  6. cronuts.digital

    Barcelona, Spain · also New York

    • Matches: Conversion rate optimisation

    From their site We transform companies that dare not to stay the same.

    Team
    11 to 50
    Founded
    2018
    Offices
    3

    Named clients36

    +32 more clients

    Cruz Roja, Barça Academy, IESE Business School, Antala Group, Nutrisport, Toyota, Credimex, Next Services, Revlon, Metropolitan, Proddigia, Tot-hom, JAX, Bayern Academy, CEROIL, Escuela Alemana de Barcelona, Grup Olivé, Mirror in the Sky, Gabis, TECTYL, Euro Hockey League (EHL), Xaloc and Mestral, Red Cross, Idilic Festival, Traspaso Dental, Cal Fruitós, Gamarra, Peñaclara, Rovi Packaging, Camping Almatá, Las Velas de Mariano, THE LONDON Nº1 x Gonzalez Byass

  7. DigitalSuits

    Miami, US

    • Matches: Conversion rate optimisation
    • Shopify
    • Shopify Plus
    • Headless commerce
    • Fashion and apparel
    • Home and furniture
    • +3

    From their site Full-cycle Shopify and AI development services

    Named clients36

    +32 more clients

    Cloudflight, Carepod, The Vaan Group, Noah Living, Claim Technology, Ask Porter, Lunchbox Packs, Sanctuary, Artisan Revere, CBD Affs, Laurus, Terrific, Wicked Cushions, Understatement Underwear, ReturnGO, Crossing Minds, Aquablu, Synsel, Seven Sundays, CircuitMess, The Custom Captain, Lone Rider, Nolan Interior, DUXIANA, KOIO, Pattern, momox, Yepoda, Zipco, Poketo, Onsen, Scentbird

  8. Roswell NYC

    New York, US

    • Matches: Conversion rate optimisation
    • Shopify
    • Shopify Plus
    • WooCommerce

    From their site maximizing customer lifetime value for your eCommerce brand.

    Team
    11 to 50
    Offices
    2

    Named clients34 6 corroborated

    +30 more clients

    Misook ✓, Kjaer Weis ✓, AE, Denny's, Calm, Colorescience, Supergoop, Tyr, Ethique, HATHEAVEN, Rotor Riot, Jennie Kwon Designs, Sendero, Hyperlite Design, Hyperlite Paid, Puravida Retention, Hyperlite Affiliate, The Sak Development, Brixton Retention Marketing, IQBAR, Hat Heaven Brand Abduction, TB12, Jones New York, Gensee, Fright Rags, Pura Vida Dev, Hyperlite Retention, Diane Von Furstenberg (DVF), Hyperlite SMS, Boyne

  9. BLKDG

    Denver, US

    • Matches: Conversion rate optimisation
    • Shopify
    • Shopify Plus
    • Fashion and apparel
    • Food and drink
    • Health and supplements
    • +3

    From their site The best businesses don't just show up. They convert, grow and outperform.

    Founded
    2011

    Named clients34

    +30 more clients

    USA Shade, Positive Tracks, Lawson's Finest Liquids, Musco Lighting, Revelshine Wines, Snowmass Ice Age, Beck Builds, Uptown Cocktails, Sierra Nevada Brewing Company, Morrow.co, 4FRNT, Mechs and Co., Steamboat Full Steam Ahead, Erem, DrinkTanks, National Forest Foundation, Granby Ranch, CMAC Partners, Mouthfuls Pet Supply, Hala Gear, Boulder Boat Works, Infinite CBD, Oskar Blues, Lemonade, Metolius, Abita, Listenup, CoffeeAM, AAC, Cuore

  10. Magneto IT Solutions

    London, UK · also New York, Toronto +1

    • Matches: Conversion rate optimisation
    • Adobe Commerce (Magento)
    • Headless commerce
    • Fashion and apparel
    • Beauty and skincare
    • Food and drink
    • +3

    From their site Your Global AI-Driven Digital Commerce and Growth Marketing Partner

    Team
    201 to 500
    Offices
    4

    Named clients26

    +22 more clients

    Enterra Medical, Kobray, STRIQ, DOD Technology, 95 Nutrition, Asia Jewellers, KGK, Chandrana Supermarket, Silhouette America, Dover Jewelry, Deadly Ponies, Lhamour, Powerlook, Thomasscott, Combipower BV, Skysales, Petzone, GBI Varpo, Diamond Boutique, Badkamermeudel Outlet, VP Wedding Planner, Catrion

  11. Coozmoo

    Austin, US

    • Matches: Conversion rate optimisation
    • Shopify

    From their site Grow Fast. Rank High. Convert More.

    Named clients25

    +21 more clients

    GTM's Art World, CAMaster, Etincelle, Find Your Clover, Harris Nevada Law, Optimized Wellness, HCL Nutrition, Alto Garden, Dermed, Daniele, OB Jewelers, PPT and Fitness, Snow Construction, Forticlean, Fun Run Box, 22 Plastic Surgery, Jobalope, Ladiesse, CoCarting, Earth University, Performance Physical Therapy

  12. Praella

    Chicago, US · also Atlanta

    • Matches: Conversion rate optimisation
    • Shopify
    • Shopify Plus
    • Beauty and skincare
    • Food and drink
    • Health and supplements
    • +3

    From their site Shopify Plus Agency building revenue & retention-driven experiences.

    Team
    51 to 200
    Offices
    2

    Named clients24

    +20 more clients

    Pillows.com, VIIA Hemp, The Shop, Billie Eilish Fragrances, CrunchLabs, Beachly, CurlMix, Izzy Liv, Keswi, Top Shelf, BootayBag, Danessa Myricks Beauty, Espro, Aggieland Outfitters, Shock Masters, Indigo Wild, Pro Soccer, Springrates, Henry's House of Coffee, Izze

  13. Solved Puzzle

    Miami, US

    • Matches: Conversion rate optimisation
    • Shopify
    • Fashion and apparel
    • Food and drink
    • Health and supplements
    • Home and furniture
    • +2

    From their site We obsess over your customers.

    Team
    11 to 50
    Offices
    2

    Named clients23

    +19 more clients

    Casa Verde, Equinox Pool & Spa, Highlight Salon & Spa, EQ State, Lolita Dessert Club, Piola Pizza USA, R. Homes, Ramona La Rue, Seeq Supply, Shoma Bazaar, Sweet Flavor, The Ross Art Group, Trendy Jendy, Zenta Pets, A'CLUB, Neverland Coffee Bar, Pink Papyrus, Ballpoint Marketing, Integramed

  14. Sweden Unlimited

    New York, US

    • Matches: Conversion rate optimisation
    • Shopify
    • Shopify Plus
    • Fashion and apparel
    • Beauty and skincare
    • Home and furniture
    • +2

    From their site We help brands turn vision into high-performing digital experiences through unified branding, content & ecommerce.

    Team
    1 to 10
    Offices
    2

    Named clients22

    +18 more clients

    Tea Collection, W Hotels, Danimas, Cara Cara, Assouline, Sonic Editions, CNCPTS, Veer, Kashwére, OPI, LAGOS, Zents, Matouk, Ruggable, MAC, Pandora, Outdoor Voices, Kirna Zabete

  15. Avex Designs

    Chicago, US · also New York, Atlanta

    • Matches: Conversion rate optimisation
    • Shopify
    • Shopify Plus
    • Fashion and apparel
    • Food and drink
    • Sports and outdoors

    From their site We help ecommerce brands modernize technology, improve customer experience, and accelerate growth through strategy, design, engineering, and retention.

    Team
    1 to 10
    Offices
    3

    Named clients21

    +17 more clients

    Calvin Klein, Vitality, Mondelez, Schutz, Khaite, AriZona Beverages, quip, Fellow, Edikted, Hill House Home, P448, Equinox, FILA, TYR, Homage, Wolf & Shepherd, The J. Peterman Co

  16. CB/I Digital

    New York, US

    • Matches: Conversion rate optimisation
    • Shopify
    • Amazon
    • Adobe Commerce (Magento)
    • Fashion and apparel
    • Beauty and skincare
    • +3

    From their site CB/I Digital is a digital marketing and platform development firm that specializes in growing traffic and revenue for DTC Ecommerce brands as well as traditional enterprises.

    Named clients20 1 corroborated

    +16 more clients

    Chan Luu, Miz Mooz, Uncle Todd's, Fresh Cosmetics, Melinda Maria, Annmarie Skincare, Naked Cashmere, Fireplace Deals, Master Cutlery, Bokksu, Ferrara, Sleeper, Z League, Be Group, Union Savings Bank, The Cocktail Project (Suntory)

  17. IWD Agency

    Austin, US · also New York, Barcelona +1

    • Matches: Conversion rate optimisation
    • Shopify Plus
    • Adobe Commerce (Magento)
    • WooCommerce
    • BigCommerce
    • Headless commerce
    • +7

    From their site The ecommerce agency that builds the store, then stays for the growth.

    Founded
    2008
    Offices
    5

    Named clients20

    +16 more clients

    Runner's Athletics, Purdue University, Berkey Creamery, Penn State University, Dominate, Urbanspace, ADTRAN, Circle Y Saddles, BinMaster, Europa Eyewear, Inyo Pools, US Camera Pro, Warner Press, EvoShield, DMC Tools, School Fix

  18. Charle

    London, UK · also Austin, Manchester +8

    • Matches: Conversion rate optimisation
    • Shopify
    • Shopify Plus
    • Fashion and apparel
    • Beauty and skincare
    • Food and drink
    • +2

    From their site Delivering ecommerce growth by crafting outstanding online buying experiences with experimentation & search-first strategies.

    Offices
    12

    Named clients20

    +16 more clients

    RNLI, CleanCo, Gray Nicolls Cricket, Billionaire Boys Club, Gilbert Rugby, Unndr, Bio&Me, Vollebak, 111Skin, Muc-Off, Samsung, Beauty Bay, Au Départ, Marie Curie, Harbour Lifestyle, Royal Museums Greenwich

  19. CommerceShop

    Atlanta, US

    • Matches: Conversion rate optimisation
    • Shopify
    • Shopify Plus
    • Adobe Commerce (Magento)
    • WooCommerce
    • BigCommerce
    • +5

    From their site Performance-led eCommerce strategy, design, and engineering — built to scale revenue, not just launch websites.

    Team
    51 to 200
    Founded
    2009

    Named clients20

    +16 more clients

    Zink Wheels, Garages for Atlanta, UrbanLane, ClearPath CFO, Primera Technology, iPromo, The Color Concierge, Tiger Friday, Empire Safety, Southern Labware, Big Fundraising Ideas, Vyrill, Lifetime Tea, Buy LED Online, Dawson Jones, CablesPlus USA

  20. WebDesk Solution

    Great Neck, NY, US · also Toronto

    • Matches: Conversion rate optimisation
    • Shopify
    • Shopify Plus
    • Adobe Commerce (Magento)
    • WooCommerce
    • BigCommerce
    • +7

    From their site The AI-First Digital Growth Agency – eCommerce, AI & Home Services, serving 500+ brands across North America since 2011

    Founded
    2011

    Named clients20

    +16 more clients

    Pack n Wood, Intelcom, One Tree Planted, Infiniti Home Comfort, Inside Injury, Integrity Toys, Generation Pet, Be Tailor, Code1 Supply, CareNovex, Prissy Duck's, Braidan Motor Sport, Bony Levy, Country Wide Sports, Outdoor Limited, VC America Electronics

  21. Charle

    New York, US

    • Matches: Conversion rate optimisation
    • Shopify
    • Shopify Plus
    • Fashion and apparel
    • Beauty and skincare
    • Food and drink
    • +3

    From their site We're a trusted Shopify agency in New York, designing, building & growing ecommerce brands.

    Team
    11 to 50
    Founded
    2018

    Named clients19

    +15 more clients

    RNLI, Gray Nicolls Cricket, Billionaire Boys Club, Candy Kittens, Gilbert Rugby, Unndr, Bio&Me, Vollebak, 111Skin, Muc-Off, Beauty Bay, Royal Museum Greenwich, Harbour Lifestyle, Samsung, Au Depart

  22. Leo Barros

    Miami, US

    • Matches: Conversion rate optimisation
    • Shopify

    From their site Marketing consultant in Miami helping ambitious brands scale revenue through high-performing websites, SEO, and conversion rate optimization.

    Team
    1 to 10
    Offices
    2

    Named clients19

    +15 more clients

    Elan, Magic Ink, Sweet Flavor, Shiro Tile, TCH, Trendy Jendy, WorldWatch, Seeq, United Nursery, Sublime Crust, Lolita Dessert Club, Inside Out, JB Realkey Properties, Wise Lion, Pure Lines

  23. Customer Paradigm

    Boulder, US

    • Matches: Conversion rate optimisation
    • Shopify
    • Automotive and parts

    From their site Programmers who care. Code that works.

    Founded
    2002

    Named clients18

    +14 more clients

    Chevy, Ecko Unltd, Comcast Xfinity, AAMCO Transmissions, John Hopkins University, Fresh Produce, Woodley's Fine Furniture, Genetech, Biodesix, Adam's Premium Car Care, ARROW, SPACE.com, Intel, Ricoh

  24. Logic Inbound

    Seattle, US

    • Matches: Conversion rate optimisation
    • Shopify
    • WooCommerce

    From their site Seattle SEO Company With A Transparency Guarantee

    Offices
    2

    Named clients17 1 corroborated

    +13 more clients

    DaBella, Mount Kratom, Envolta, PAC Worldwide, NPPN, Redwood Valuations, Exotic Motors, Beaver Valley Foot Clinic, Innovative Men's Clinic, Advanced Liposuction Center, Sound Medical Technologies, Pure Maintenance AZ, Cannon EyeCare

  25. Trepoly

    Denver, US

    • Matches: Conversion rate optimisation
    • Shopify
    • WooCommerce
    • BigCommerce

    From their site Conversion‑focused Shopify, WooCommerce, and BigCommerce stores built for Colorado businesses that want speed, clarity, and growth.

    Founded
    2012

    Named clients17

    +13 more clients

    Decadence Gourmet, Simplesa, DiaSzabo, Saddle Up Colorado, What Eyes Want, GroutGetter, Mattress by Appointment, NCASS Equipment, Geolens, Hot Shapers, Laser Perfect, Numato, PCCO

From the ecommerceguide dataset

Conversion rate optimisation agencies in numbers

Calculated from every agency in this category, not just this page. Each figure opens the list filtered to it.

Agencies listed
594
Name at least one client
464 78%
Agency to client links recorded
5,549
Have a corroborated client
92 15%
Team size on record
114 19%
Founding year on record
115 19%

How this directory works

Where agencies come from

Agencies are found in Google search and business-listing results for ecommerce agency searches, and through agencies submitting themselves. Each agency's own site is then read to record its services, platforms, sectors, offices and the client brands it names.

What “named clients” means

A named client is a brand the agency names on its own site, usually in a case study or portfolio. It is the agency's claim. Where the client's own site or technology stack backs that claim, the client is marked corroborated (✓).

How platforms, services and sectors are assigned

From what the agency's pages describe. A sector is recorded when the agency's named clients sell in it or the agency explicitly describes that work, not from a single passing mention.

Locations

Only a head office or office found in a business listing with an address, or named on the agency's own site. An area an agency says it serves is not treated as a location.

Order and payment

The default order is by number of named clients, which reflects how much of a portfolio an agency publishes as well as its size. It is not a rating. Sponsored placements appear separately and labelled. Self-submitted listings are paid for and are ordered the same way as every other listing.

Corrections

If a listing is wrong, email hello@ecommerceguide.com with the page and the correction.